PM ISOLATOR

1064nm PM Isolator: Applications, Features, and Specifications

Are you looking for a non-reciprocal fiber optic device that allows the flow of optical power in only one direction? Well, if your answer is yes, then you should consider the 1064 polarization-maintaining fiber optic isolator because it prevents reflections in the backward direction. By using PM fibers, you can maintain the 1064 PM optical isolator state of polarization of the light. Today, you can easily find both PM and non-PM types of these 1064nm optical isolators.

Basics of 1064nm PM Isolator:

This PM isolator is based on the non-reciprocal Faraday Effect – a longitudinal magnetic field generates a rounded birefringence that rotates the alignment of the incoming polarization.

Applications of 1064nm PM isolator

The primary application of the 1064nm polarization-maintaining isolator is to protect the transmission of the laser diode from back reflections. That’s because such reflections increase the noise in the system by disrupting the diode’s operation. The 1064nm PM isolator also enhances the steadiness of fiber amplifiers by lessening the chances of reaction, which can cause undesirable oscillation.

Fiber-Coupled 1064nm PM Isolator:

A fiber-coupled 1064nm PM isolator is a device that works like an optical diode. That is, it transmits in one direction while blocking light in the other direction. You can find such isolators in fiber-coupled form – with input and output coupled to single-mode fibers.

The 1064nm PM isolator is generally positioned at the output of the optical source to avert the light reflection from returning to the source. Moreover, Doped Fiber utilizes the 1064nm PM isolators for avoiding an oscillating behavior.

Here are a few features of 1064nm PM Isolators:

  • Polarization maintaining
  • Low insertion loss
  • High isolation and return loss
  • High reliability and stability

Here are a few Specifications of 1064nm PM Isolator

  • Center Wavelength (nm)   1064
  • Operating Wavelength Range (nm)  ±5-10
  • Top Isolation at 23 ℃ (dB)  30-35
  • Min. Isolation at 23 ℃ (dB)   25-28
  • Max. Insertion Loss at 23 ℃ (dB)  1.2
  • Lowest Extinction Ratio at 23 ℃ (dB)   >20
  • Min. Return Loss (Input /Output) (dB)  50
  • Max. Average Optical Power (W)     0.3~200
  • Max. Peak Power for ns Pulse (kW)   1~50
  • Max. Tensile Load (N)    5
  • Operating Temperature (°C)  -5 to +50
  • Storage Temperature (°C)  -10 to +60

Important Things to Note:

  1. The 1064nm PM isolator can be customized, and the above specifications are subject to change.
  2. Unless specified, the slow axis of the fiber is aligned with the key of the PM fiber connector.
  3. Bare fiber doesn’t support the connector’s weight.

You should consider the 1064nm PM isolator if you’re looking for a high-quality passive device that can transmit the optical signals in one direction and block all the undesirable optical reflections.