Category: WDM

Key Components of a Polarization Maintaining Fused WDM System

Have you ever wondered how the internet works? It’s like a big network of roads where information travels from one place to another. But did you know that there are special tools called Polarization Maintaining Fused WDM that help make this network strong and reliable? Let’s learn about the key components of a Polarization Maintaining Fused WDM system in simple words!

1. Optical Fibers

Imagine optical fibers like tiny, invisible roads that carry beams of light. These fibers are the backbone of a Polarization Maintaining Fused WDM system. They help guide the light signals from one place to another without getting lost or mixed up.

2. Wavelength Division Multiplexers (WDMs)

Wavelength Division Multiplexers, or WDMs for short, are like traffic controllers on the optical fiber roads. They help manage the flow of light signals by splitting them into different wavelengths, or colors, so they can travel together without crashing into each other.

3. Polarization Maintaining Fiber (PMF)

Polarization Maintaining Fiber is a special type of optical fiber that keeps the light signals aligned in a specific direction. It’s like having lanes on a road where cars can only travel in one direction. This helps prevent the light signals from getting mixed up or scattered along the way.

4. Fused WDM Devices

Fused WDM Devices are the heart of a Polarization Maintaining Fused WDM system. These devices combine the functions of WDMs and PMFs to efficiently manage and guide the light signals. They ensure that the signals stay organized and reach their destination safely and without any interference.

5. Connectors and Couplers

Connectors and Couplers are like the bridges and tunnels on the optical fiber roads. They help connect different parts of the Polarization Maintaining Fused WDM system together, allowing the light signals to travel smoothly from one component to another.

Why Polarization Maintaining Fused WDM Matters

Polarization Maintaining Fused WDM matters because it helps make the internet faster, more reliable, and less prone to errors. By keeping light signals aligned and organized, Polarization Maintaining Fused WDM ensures that data travels quickly and accurately through optical networks.

Fewer delays, less data loss, and better overall performance for internet users can be achieved. Additionally, Polarization Maintaining Fused WDM systems allow for efficient use of optical fibers, maximizing the capacity of communication networks and enabling seamless connectivity for millions of people worldwide.

The major components of a Polarization Maintaining Fused WDM system function like a well-oiled machine to keep the internet working smoothly. From optical fibers and WDMs to Polarization Maintaining Fiber and Fused WDM devices, each component plays an important role in directing and managing the flow of light data.

Overcoming Challenges with PM Filter WDM Deployment

Fiber optic networks represent the backbone of modern communication infrastructure. By encoding data into light, fiber optic cables can transmit vast amounts of information at blistering speeds. 

At the core of high-capacity fiber optic networks lies a technology called wavelength division multiplexing (WDM). WDM allows multiple data signals to be transmitted over the same optical fiber by using different wavelengths or colors of light. 

An advanced form of WDM called polarization multiplexed (PM) filter WDM pushes the boundaries even further by combining wavelength division multiplexing with polarization multiplexing. This combination provides extraordinary capacity and efficiency gains that are critical for supporting the exponential growth in data traffic. However, these advantages come with a unique set of deployment challenges that must be addressed. 

Polarization Sensitivity  

The most fundamental issue is polarization sensitivity. PM filter WDM relies on maintaining the polarization of light waves as they pass through the network. Unfortunately, fluctuations in temperature, mechanical stress, and other factors can cause the polarization to drift. 

Without proper control, signal quality degrades leading to increased data errors. Manufacturers utilize special fibers and electronics that help maintain polarization integrity. However, additional adjustments may be needed when installing system components to ensure proper alignment and operation. 

Channel Crosstalk 

Another major concern is the crosstalk between closely spaced wavelength channels. The optical filters that separate the wavelengths are not perfect. A small amount of signal from one channel can leak into another which distorts the original data. 

Some standards establish maximum acceptable levels of crosstalk in PM filter WDM systems. Engineers must carefully select filters and optimize channel spacing configurations that mitigate crosstalk during deployment. 

Dispersion Management 

Dispersion also poses issues for PM filter WDM networks. As light propagates through the glass fiber core, wavelengths spread out slightly. This causes pulses to broaden which makes it harder to distinguish data bits at the receiving end. 

Moderate dispersion levels can be compensated by using dispersion-compensating modules. However, higher dispersion may require installing specialty fibers with ultra-low dispersion properties. 

Signal Loss 

Deployment teams also have to minimize optical signal loss and attenuation. Microscopic impurities in the glass as well as subtle fiber faults absorb a tiny fraction of the light energy as it travels through the cable. 

Connectors, splices, and other components also contribute additional loss. Careful routing, splicing, and inline amplification help overcome signal loss and extend PM filter WDM transmission reach. 

Scalability and Upgradability 

Upgradability and scalability have to be factored in when architecting PM filter WDM systems. Demand for bandwidth grows relentlessly as new applications emerge. 

Deployed infrastructure should be designed with open interfaces and extra capacity to simplify adding new wavelengths, transmission gear, and inline amplification down the road. 

PM filter WDM offers groundbreaking capacity for fiber optic networks. However, successfully harnessing its potential requires extensive expertise in optical engineering and network planning. From tackling polarization sensitivity to minimizing signal impairments, the deployment process is filled with challenges. However, by leveraging the latest technical innovations and design principles, these hurdles can be overcome. 

Navigating the World of Optical Communication: Understanding PM Filter WDM

In the ever-evolving landscape of optical communication, technology continues to advance at a rapid pace. One of the key innovations in this field is PM Filter WDM, a technology that plays a crucial role in optimizing data transmission and network efficiency. In this blog, we will delve into the world of PM Filter WDM, exploring what it is, how it works, and its significance in the realm of optical communication.

What is PM Filter WDM?

PM Filter WDM stands for “Polarization-Multiplexed Filter Wavelength Division Multiplexing.” Let’s break down this mouthful of a term:

1. Wavelength Division Multiplexing (WDM): This technology allows multiple optical signals with different wavelengths of light to be combined and transmitted over a single optical fiber. In essence, it’s like sending multiple streams of data over a single road.

2. Polarization-Multiplexed: This aspect of PM Filter WDM relates to the use of polarization to differentiate between the various wavelengths of light. Light, as an electromagnetic wave, has both electric and magnetic components that oscillate in a particular orientation. This orientation is known as polarization. By leveraging polarization, PM Filter WDM can further increase the capacity and efficiency of optical communication systems.

How Does PM Filter WDM Work?

PM Filter WDM operates by using a combination of filtering and polarization multiplexing techniques. Here’s a simplified overview of the process:

1. Signal Generation: Data is initially converted into optical signals using lasers, each operating at a different wavelength (color of light).

2. Polarization Multiplexing: The optical signals are then split into two orthogonal polarization states, typically referred to as “horizontal” and “vertical.”

3. Wavelength Combining: The polarized signals are combined and filtered through a device known as a PM Filter. This filter separates and directs the different wavelengths of light based on their polarization.

4. Transmission: The filtered signals are then sent through an optical fiber, allowing for the simultaneous transmission of multiple data streams over the same medium.

5. Receiving End: At the receiving end, a complementary PM Filter separates the different wavelengths and polarizations to recover the original data streams.

The Significance of PM Filter WDM

PM Filter WDM offers several advantages in the realm of optical communication:

1. Increased Capacity: By utilizing different polarizations, PM Filter WDM effectively doubles the capacity of existing WDM systems. This is crucial as the demand for higher bandwidth continues to grow.

2. Enhanced Reliability: The use of multiple polarizations makes PM Filter WDM more resilient to signal degradation caused by various factors, including fiber imperfections and external interference.

3. Efficiency: PM Filter WDM optimizes the use of available optical bandwidth, allowing for more data to be transmitted simultaneously without the need for additional fibers.

4. Simplicity: PM Filter WDM simplifies the architecture of optical networks, reducing the need for complex signal processing equipment.

Conclusion In the world of optical communication, PM Filter WDM represents a significant step forward in enhancing capacity, reliability, and efficiency. As the demand for faster and more reliable data transmission continues to rise, technologies like PM Filter WDM will play a pivotal role in meeting these growing needs. Understanding the fundamentals of PM Filter WDM is essential for those working in the field of optical communication and for anyone interested in the future of high-speed data transmission.

Enhancing Fiber Optic Systems with 980/1550nm Fused WDM Technology

By enabling high-speed and high-capacity data transmission, fiber optic communication systems have revolutionized the way information is conveyed over great distances. Advanced technologies, such as 980/1550 nm fused wavelength division multiplexing (WDM), have emerged to improve the effectiveness and performance of these systems.  In this blog, we will examine how fiber optic systems are improved by 980/1550nm fused WDM technology, enabling effective signal transmission and extending network capabilities.

Understanding Technology for 980/1550 nm Fused WDM:

The advantages of two important wavelengths, 980nm, and 1550nm, are combined in a single component by 980/1550 nm fused WDM technology. It enables the simultaneous transmission of signals in both wavelength ranges, enhancing fiber optic networks’ capacity and adaptability. Pump lasers in optical amplifiers typically operate at a wavelength of 980 nm, although the 1550 nm wavelength is often utilized for long-haul data transmission.

Effective Signal Multiplexing and Amplification:

The ability to efficiently multiplex and amplify signals is one of the main advantages of 980/1550 nm fused WDM technology. This method enables enhanced data transmission capacity and optimal fiber utilization by merging numerous optical signals at various wavelengths onto a single fiber. Furthermore, pump lasers operating at the 980 nm wavelength can amplify optical signals in erbium-doped fiber amplifiers (EDFAs), improving signal quality and expanding transmission ranges.

Network Flexibility and Scalability:

Network scalability and flexibility are increased due to the incorporation of 980/1550 nm fused WDM technology for network operators. Fiber optic systems can serve a greater variety of applications and services at once by utilizing both 980 nm and 1550 nm wavelengths. As a result, operators may support diverse transmission requirements, such as voice, data, and video, in a single network infrastructure and fulfill the growing demand for bandwidth.

Improved Transmission Efficiency:

Fibre optic systems gain from improved transmission efficiency with 980/1550 nm fused WDM technology. Signal losses are reduced, enabling greater transmission distances without the need for regular signal regeneration, by using the 1550 nm wavelength for long-haul transmission, which experiences less attenuation in optical fibers. As a result, network deployments become more economical and effective.

Infrastructure Compatibility:

The 980/1550 nm fused WDM technology has the added benefit of being compatible with the current fiber optic network. Without requiring extensive infrastructure improvements or alterations, it may simply integrate into existing networks. Due to its compatibility, current fiber optic deployments may maximize their return on investment while seamlessly transitioning to new capabilities.

Conclusion:

The adoption of 980/1550nm fused WDM technology improves fiber optic networks significantly. This technique offers efficient signal multiplexing, amplification, and transmission over long distances by fusing the benefits of the 980 nm and 1550 nm wavelengths. As a result, network installations become more effective and economical. It gives network operators greater flexibility, scalability, and compatibility with current infrastructure. 980/1550 nm fused WDM technology plays a critical role in upgrading fiber optic systems and enabling the seamless transfer of information in a variety of applications as the demand for faster data rates and more network capacity continues to grow.

Everything You Need to Know about WDM Technology in Brief

The WDM technology is booming and being used at a large scale and help you tackle multiple networking challenges. But how does it work? What are CWDM and DWDM? What does PM Filter WDM mean? We will learn all about these things in this article.

What is WDM?

Wavelength Division Multiplexing (WDM) is an optical transport technology that enables you to divide existing optical fibers into multiple channels of traffic so that several streams of data can be transported simultaneously.

Think of WDM as creating multiple lanes on a highway so that the traffic flows efficiently.

Due to the potential multiple benefits, such as efficient transfer of more data, less time, cost-effectiveness, and easy usage, more public sector organizations, healthcare providers, utility providers, financial institutions, corporate enterprises, data center operators, and telecommunication companies are considering implementing WDM technology.

How does WDM technology work?

In WDM networks, light signals or wavelengths of multiple colors are used over the same optical fiber. Optical transmitters that are tuned to specific wavelengths are used to send light into a passive combiner called a multiplexer (Mux).

All of the wavelengths selected for data transmission travel along a common path i.e. an optical fiber and then they are separated by using a passive optical splitter or demultiplexer (Demux).

WDM networks are usually bi-directional and allow combined and split wavelengths to travel in both directions over a single fiber.

 WDM technologies such as Demux and Mux allow organizations to place the device at either end of a fiber pair and combine multiple wavelength channels into a single fiber pair instead of using different optical fiber pairs.

What are CWDM and DWDM?

Coarse Wavelength Division Multiplexing (CWDM) and Dense Wavelength Division Multiplexing (DWDM) are the two fundamental technologies built based on WDM technology. However, both of them have different wavelength patterns and are used for different applications. Both WDM technologies can effectively increase the bandwidth capacity needs and maximize the use of both existing and new fiber components and fibers.

The main difference is that CWDM systems support eight wavelengths per fiber and are used for short-range communication, DWDM systems support 96 or more channels spaced at 0.8nm apart within the 1550nm C-Band spectrum. Therefore, when compared to CWDM, DWDM systems can transfer a huge quantity of data through a single fiber link.

What is PM Filter WDM (FWDM)?

PM Filter WDM is the technology that wavelength division multiplexing while maintaining the polarization of the light signal. Based on environmentally stable thin film filter technology, PM Filter WDM is characterized by wide-band, high extinction ratio, low insertion loss, and high return loss. PM Filter WDM is ideal for PM fiber amplifiers, fiber lasers, and instrumentation applications.

At DK Photonics, we provide high-quality and affordable PM filter WDM, DWDM, and CWDM in a range of standard and custom specifications. For any queries, please get in touch with us.

How Is Optical Fused WDM Technology Benefiting The Optical Communication Industry?

When two or more optical wavelength signals are combined and transmitted through the same fused fiber core for transferring information, the process is called optical fused WDM, an acronym for Wavelength Division Multiplexing (WDM). In this blog, we will discuss wavelength division multiplexing in brief and see what makes this technology so favorable and popular in today’s time.  

An Overview of Wavelength Division Multiplexing

Wavelength Division Multiplexing (WDM) is a technology that is typically applied to wavelength division multiplexers (combiners) and demultiplexers. These combiners and demultiplexers are installed at both ends of a fused optical fiber to combine and split different light waves respectively. The working of both devices revolves around the same principle.

Fused taper, dielectric, raster, and flat are the different types of optical wavelength division multiplexers and their quality is determined by various characteristics such as insertion loss and isolation.

In general, an optical fiber communication line can be divided by using wavelength division multiplexers or demultiplexers. Depending on the number of multiplexing wavelengths, the line can be divided into two-wavelength multiplexers and multiple-wavelength multiplexers. Then, based on the interval between multiplexing wavelengths, it can further be divided into coarse wavelength division multiplexing (CWDM) and dense wavelength division multiplexing (DWDM) that are often used in various WDM systems and optical amplifiers.

How is the optical fused WDM technology beneficial for the optical communication industry?

  • It allows the full utilization of an optical fiber’s low loss band to maximize an optical fiber’s transmission capacity.
  • It helps increase the physical limit of information transmission via one optical fiber by two times.
  • Today, we use only a small part of the optical loss spectrum. The WDM technology can help us make full use of a huge bandwidth of a single-mode optical fiber.
  • It is empowered with the ability to transmit two or more unsynchronized signals in the same optical fiber and thus, provides compatibility between digital and analog signals. This ability is independent of the data rate, modulation mode, or allows it to remove or join channels even in the middle of the line.
  • WDM technology can be used for the cables that have already been built with few cores and laid early because it ensures the compatibility to make the transmission of multiple one-way or two-way signals possible.
  • It helps reduce the amount of optical fiber used and requires fewer fibers to install for a project when compared to old projects before the advent of WDM technology. Thus, it lowers the cost of construction and installation significantly.
  • Since WDM technology has reduced the number of optical fibers required for a project, it has become easier and faster to recover from a fault.
  • The sharing of active optical equipment also reduces the cost of transmitting multiple signals or appending new services.
  • This technology has also reduced the number of active devices used, and hence, also improved the reliability of a system.

With the rising need for the development of integrated cable television services, the demand for increased network bandwidth and optical fused WDM devices is also increasing. What we are facing ahead is the age of optical communication. Thus, there is no doubt that the use of WDM technology will become more common in the future than now.

Are You Hesitant In Implementing WDM in Your Next Project? Know Why You Shouldn’t

Years ago, implementing WDM or wavelength division multiplexing in a telecommunication project was a huge task. And it’s because this technique required large, complex systems for proper functioning. Also, the systems were expensive. But today, things are different.

You will WDM with different configurations that are suitable for enterprises, data centers, government operators, and large-scale service providers. Most importantly, the available configurations are cost-effective.

There are many other things to know about WDM that can help your project in running smoothly. In this post, we will discuss some basics and important facts about WDM.

About Wave Division Multiplexing (WDM)

WDM functions by transporting different data streams through one strand of fiber. The transportation is done via differing light wavelengths. As compared to the single beam of light used to transport one data stream, on one wavelength, you will find lots of differences and improvements with WDM. There is no interference between the streams because multiple streams of data can be sent over the same fiber by assigning each data stream its wavelength.

With WDM, you can send data streams over independent channels while allowing for expansion and the addition of more channels.

The two categories of wave division multiplexing (WDM)

  • Coarse wave division multiplexing or CWDM
  • Dense wave division multiplexing or DWDM

The two categories of WDM are effective in increasing bandwidth capacity. Somewhat, these categories play a similar role in the implementation of WDM in a project. But, these categories have different channel configurations and have different advantages and disadvantages. The configurations depend on the environment CWDM and DWDM are used and the network challenges they face in the functioning.

Difference between CWDM and DWDM

The CWDM has a lower density with a shorter reach compared to DWDM. CWDM is used at a stretch of up to 80km or less where lower capacity isn’t an issue. On the other hand, DWDM provides higher density, higher bandwidth, and more accurate lasers. DWDM can be amplified to give a much longer reach but at a higher cost and technical complexity. DWDM possibly fits 40, 80, or up to 96 channels on the same fiber pair, which enables a huge amount of data to be pushed through the higher number of wavelengths available.

Working of wave division multiplexing (WDM) transceiver

WDM transceiver converts electrical signals from host equipment into optical signals to be transmitted via fiber. The conversion of the fiber is into a specific light wavelength with a unique color. You can add new channels without affecting existing traffic and transport a mix of data at different speeds over a single fiber of fiber pair simultaneously. The overall working of the WDM transceiver will depend on the selection of the CWDM or DWDM. They should match your multiplexer.

One major advantage of wave division multiplexing (WDM)

Scalability and flexibility- As an operator, you can divide and dedicate channels between many customers along with the organizations. It is easy to divide channels between departments and cope with the increased number of applicants with WDM. Most importantly, video and big data processing are clear.

After reading the post, we hope you won’t hesitate in implementing WDM in your next project.

Everything to Know About Wavelength Division Multiplexing (WDM)

As the name suggests, the wavelength division multiplexing or WDM technique uses different light wavelengths for its processing. In fiber optic transmission, the WDM technology increases the data-carrying capacity by using multiple light wavelengths. In specific, the technology multiplexes several optical carrier signals onto a single optical fiber, using different laser light wavelengths.

People think WDM technology is new in the industry. And thus, they don’t trust the same. But truly speaking, WDM technology was developed many years ago and has been deployed across global networks. Today, technology is used in one form or another to a significant degree.

Classification of wavelength division multiplexing (WDM)

 Coarse wavelength division multiplexing (CWDM) – This is defined by wavelengths, which belong to the International Telecommunication Union (ITU). The wavelengths used in this are from 1270nm to 1610nm within 20nm channel spacing. If compared to dense wavelength division multiplexing (DWDM), the CWDM supports fewer channels. So, it becomes the ideal solution for short-range communications. It’s compact and cost-effective.

Dense wavelength division multiplexing (DWDM) – This is defined by frequencies, which is the member of International Telecommunication Union (ITU). The frequency is usually converted to wavelength for use. DWDM is capable to transport up to 80 channels in the 1550nm region. It allows huge amounts of data to travel in one single network link, so it is ideal for long-haul transmission. It’s tightly packed together. 

Differences between CWDM and DWDM

  • Channel spacing 
  • Transmission distance 
  • Modulation laser 
  • Costs

Applications included in WDM technology 

When buying WDM products online or in stores, you will come across many options. To make your purchase easy, we have listed some applications included in WDM technology. 

  • Wavelength multiplexers– Increases bandwidth capacity on existing fibers 
  • WDM filters– Routes specific wavelengths to monitoring equipment 
  • Add/Drop multiplexers– Adds/drops wavelengths along a network route 
  • Aggregation multiplexers– Manages different service providers on the same fiber

Benefits of WDM technology 

  • Transmits and receives high capacity data, which is a ready-made option for high-bandwidth transmissions
  • Boosts the intensity of optical signals for long-range transmission with the help of Erbium-Doped Fiber Amplifier
  • Ensures transmission transparency because wavelengths are independent and channels don’t interfere with each other 
  • Allows new channels without disrupting the existing traffic services, making the upgrades easier
  • Maximizes the utilization of fibers and helps to optimize overall network investments

Where should you buy WDM products?

The WDM technology will work and deliver quality service only if you get the right WDM products. Whether you are planning to buy WDM products online or offline, you should research in-depth. You should look for one of the reputable suppliers of WDM products. 

 DK Photonics is that one popular name that designs and manufactures high-quality WDM products. The company is headquartered in Shenzhen of China. You can place an order for WDM products online through our website and we will deliver them as early as possible. Our products are cost-effective and we offer the best service in the industry. 

How is a fused coupler used for the fiber communication purpose?

A fused Wavelength Division Multiplexer (WDM) is also known as wavelength combiners or splitters. It is used to combine or separate signals and it is the ideal solution for combining pump and signal powers or separating telecom signals. The visible wavelength WDMs are used for multi-color displays, sensors, and microscopy. The 980/1550nm Fused WDM is a favorable choice to be used in optical fiber amplifiers, optical fiber laser, EDFA module, and communication systems.

There is a desperate need for bandwidth in today’s high tech world and the development of WDM has helped the expansion of network capacity over a single fiber. The fiber optic systems have a fiber optical coupler with input fibers (single or more) and output fibers (single or more). The functions of the module provide the first level of bandwidth expansion for a network by increasing a fiber’s signal carrying capacity. The fused module is providing a cost-effective way to maximize the wavelength isolation.

Here are the benefits of optical fused coupler –

Splitting: The single optical signal is used to supply two outputs with the help of splitters.

Combining: The fiber optic couplers combine 2 signals and yield single output.

The 980/1550nm Fused WDM has different features like a low excess loss, small size, and low insertion. The device is used for high speed communication, fiber lasers, amplifiers, and instrumentation. It is also used in EDFA and it combines the pump power and optical signal into the Er-fiber. The fusing technique has high wavelength isolation and is extremely good for stability & reliability. The 980/1550nm Fused WDM Module can combine 980nm and 1550nm signals into one fiber or separate 980nm and 1550nm signals into two fibers. It is used for L-band EDFA.

The CWDM multiplexers talk about the CWDM method and it multiplexes multiple optical carrier signals on a single optical fiber. The different signals are carried out with the help of different wavelengths/colors of laser light combined in a MUX. The multiplexer or demultiplexer is one of the most important components of CWDM systems. The module is easy to operate and has a reliable low-maintenance design. The device has the capability of multiplexing and de-multiplexing ITU-T G.694.2 wavelengths up to 8 channels in increments of 20nm from 1270 nm to 1610 nm.

Here are the features of the WDM module –

Bidirectional

Highly stable & reliable

High directivity

Low polarization sensitivity

Ultra high isolation

Ultra low insertion loss

There are leading companies in the market that are master at designing and manufacturing optical passive components for fiber lasers, sensors, and telecommunication. The manufacturers can provide customized designs to meet specialized feature applications and it offers modular assemblies that integrate other components to form a full function module or subsystem. Buy the 980/1550nm Fused WDM online at an effective price. Connect to the companies for developing customized optical couplers.

How High Quality PM Filter WDM Helps in Better Optical Fiber Communication?

Polarization Maintaining Filter Wavelength Division Multiplexer (PM Filter WDM) is best for high speed WDM network systems. It maintains signal polarization while providing wavelength division multiplexing. It is totally dependent on environmentally stable thin films filter technology with high return loss.

What is the need for Wavelength Division Multiplexing?

PM FWDM

It can be said as the technology which is multiplexing various optical signals onto a single fiber. It is incorporated using different wavelengths of laser light enabling bi-directional communications over fiber connections. It is different from frequency division multiplexing which is applied to a radio carrier. As the name suggest, multiplexer transmit several signals together. It is popular among telecommunication industry because without laying more optical fiber companies can expand the capacity of the network.

Why to use PM Filter WDM?

  1. It can be used best to maintain polarized fiber amplifiers and is used in DWDM systems.
  2. With help of this WDM, high speed communication systems are developed.
  3. It also helps in the development of instrumental applications.

Features of PM Filter WDM

Listed below are some of the PM Filter WDM features –

  • It has high extinction ratio.
  • High return ratio.
  • Great reliability and strong environmental stability.
  • Low insertion loss.

PM Filter WDM is used for applications like EDFAs, fiber sensing system, WDI module and many more. Compliance is maintained in terms with RoHS and Telcordia GR-1221-CORE. While designing and manufacturing ITU standards should be followed. PM Filter WDM is used by companies and individuals to perform drop function or adding a single channel. It is used on sensor systems with advanced packaging technology.

Performance Specification of PM Filter WDM

Here are detailed specifications of the WDM –

Parameter Unit T1550/R980 T980/R1550
Transmission Wavelength Range nm 1520~1580 960~990
Reflect Wavelength Range nm 960~990 1520~1580
Max. Insertion Loss Transmission dB 0.8
Reflect dB 0.5
Min. Isolation Transmission dB 25
Reflect dB 12
Min. Extinction Ratio dB 20
Min. Channel Flatness dB 0.3
Min. Return Loss dB 50
Max. Power Handling(CW) W 0.3, 0.7, 1, 2, 3, 10
Max. Tensile Load(N) N ≤5
Fiber Type – PM Panda fiber
Operating Temperature ℃ -5 to +70
Storage Temperature ℃ -40 to +85
Package Dimensions mm Ø5.5 x L35

Specifications can be changed or altered as required. Also, the values specified are not subjected to any connector loss. PM fiber and the connector key are aligned to slow axis. This product can also be used to multiplex other wavelengths, including 980/1064 PM WDM nm (pulsed laser applications) and 1064/1550 nm (Erbium-Ytterbium pumping). Low power (300 mW, 500 mW) and high power (5W) handling are available.It can also be provided with a PM isolator integrated in the same package. They are ideal for polarization maintaining fiber amplifiers, fiber lasers, and high speed communication system and instrumentation applications.