For those of you who don’t know, optical PM fiber is known to be used for optical devices that require light polarization. Each fiber has a certain task for which they are designed to do and is suitable for certain applications. So, it would work in your favor if you have some knowledge about optical fibers so that you can make a well-informed decision and buy the perfect one for your requirements. To help you with that, in this blog, we have collected a few important points about the optical circulator that is used for maintaining light polarization, allowing you to choose the right fiber.

PM Circulator

Are you someone who is looking for a circulator for devices such as fiber sensors, fiber amplifiers, appliances, coherent detecting appliances, or test and measurement appliances? Well, if you are then the polarization maintaining (PM) optical circulator with both of the axis working, might be the ideal choice for you. PM circulators are known to be compact as well as efficient to route the incoming signals from Port 1 to Port 2, and also incoming signals from Port 2 to Port 3. This circulator tends to work as a single that is also used to transmit light from an input fiber to an output one. The light returning from the output fiber to the third port is also directed by this circulator. Moreover, this circulator, with both axis functioning, acts as an isolator that protects the input fiber from return power while the light that is rejected, can still be used.

Another kind of fiber that can prove to be useful for these kinds of applications is the PM circulator with fast axis blocked. Just like the earlier one, this circulator is also compact, lightweight, and performs quite effectively. This kind of circulator (fast axis blocked) also has functions similar to the other circulator (both axis working). Both of these PM circulators that are used for maintaining polarization have the capability to handle the power ranging from 300mW to 20W and have a center operating wavelength that ranges from 500nm to 2100nm.

These PM circulators tend to provide a wide range of benefits such as high isolations, low insertion loss, and so on. The following are some of the significant benefits that PM circulators provide.

  • Affordable and low cost
  • Low insertion loss
  • High stability
  • Reliability
  • High isolation
  • High extinction ratio

There are many other circulators that are used for a variety of other applications, so whichever fiber you decide upon, you should ensure that it fits and suits your electric device perfectly. Furthermore, it is recommended that you get to know about your electric device in detail before you actually start looking for the right PM circulators. And once you have determined that, you should find a reliable and well-reputed PM circulator supplier to reap all the benefits.