Tag: optical attenuator

How Great Of Fiber Optic Cables

Fiber optic cables are used frequently for today’s telecommunication network because of their high bandwidth, high reliability and relatively low cost. For a layman, fiber optical cable or FOCs as they are often called, is a plastic or glass fiber which permits the transmission of communications over large distances and at higher rates. They present wire almost superfluous, because they pass the same, but there are a lot of loss. These cables are unique because they are not affected by electromagnetic interference. Use these cables in performing image used in the fiber.

Each cable can not beyond the permissible limit. Fiber optic cable is very safe and more reliable than the traditional copper wire. Most of these cable to work in high-pressure environments. A fiber optic cable assembly includes a tube, a track and fasteners in addition to the conventional fiber bundles.

The cable tubes have both front and rear surfaces to it. These cables operate with the help of photons. These photos are transmitted to a second quantum dot which is placed between mirrors. These mirrors absorb the photons and bounce them back to the quantum dot until it absorbs it.

The fiber optic cables are used for carrying different services pertaining to data, voice, cable TV, and video. The fiber optic cables keeps the electronic equipments far away from environment that are subjected to high temperature, stem, dust, smoke and so on. The unique feature of these fiber optic cable is that stainless steel lens and fiber cables can be easily replaced without any further calibration.

For the installation of fiber optic cables, fiber optic cable blowers are designed. The unique feature of these fiber optic is that they carry information in the form of light. These cables are very useful in transporting both audio and video signals over short and long distances. If a fiber optic cable is broken, another cable has to be fitted in between the connectors rather than soldering or twisting them. Fiber optic technologies have found its place in many applications. They are widely used in telecommunications, CCTV security places, and local area networks and so on.

Glass fibers are made use of for fiber optic cabling. They hardly provide any change in the signals they carry over long distances. Engineers found that by adding some additional chemicals into the existing silica, they can change the properties of the glass used for the cable (glass fiber cable). Althouth, both glass and plastic can be used in the manufacture of cable, glass is the preferred one used in the manufacture of cable, used for long distance transmission communication. The purpose of glasses in total internal reflection transmission.

A fiber optic cable consists of a core which is made of glass silica. Through this core, the light is guided. The core is covered with a material whose refractive index is slightly lower than that of the core. Two optical fibers are connected via mechanical splicing or fusion splicing. This process involves lots of skills as microscopic precision is required to align them.

Regardless of the application used in optical fiber, they will stay here. Their unique features and capabilities, to ensure that they will continue to spread widely used in communications industry for many years.

What Is an Optical Attenuator?

LC Plug Type Fixed AttenuatorAn optical attenuator decreases the strength of an optical signal passing through it to a fiber optic cable or open air. The intensity of the signal is described in decibels over a specific distance the signal travels. It is the strength, or amplitude of the signal that changes and not the overall waveform or frequency, so the optical signal remains undistorted for use in the desired application. Optical attenuators are often used in optical communication systems, in which the attenuation, also called transmission loss, helps with the long-distance transmission of digital signals. The most common optical attenuator types include fixed and continuously variable attenuators.

Often installed where signals are transmitted from, an optical attenuator can apply the principle of gap loss so the signal intensity is lowered to the optimal level over a given distance. Attenuators installed elsewhere along the optical fiber will not lower the signal strength enough, but some devices utilize signal absorbing or reflecting components to compensate. An optical fiber connector is often attached to the optical attenuator which typically has an adapter with a female configuration. The attenuator itself usually has a cylindrical or even box-like structural shape which determines the type of equipment in which it can be installed.

The fixed variety of optical attenuator, sometimes found in an electronic circuit, does not reflect light signals to reduce their intensity. It is generally used where the transmission of data needs to be highly accurate. The device’s function is determined by the amount of power it can handle in addition to important variables such as performance versus temperature and frequency range. Most optical attenuators utilize resistors, but a variable optical attenuator uses metal semiconductor field effect transistors or other solid state components. Attenuation intensity is adjustable so the signals in a fiber optic communication system can be changed to accommodate fluctuating power levels, protecting the system from damage.

A variable optical attenuator can be mounted on a printed circuit board, or used in test devices such as an optical power meter. Many attenuators are installed in-line with an optical fiber cable in order to adjust the transmitted signal accordingly. They are sold by many retailers and manufacturers online so one can assess their characteristics by reading the product specifications. Aspects to consider include the average and peak power the device can tolerate, how much attenuation it provides, as well as its overall dimensions and the type of environment it can operate in.