Why should Use the Right Polarization Maintaining Fiber

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Fused
Coupler is a type of optical fiber that is used to split high power single line
polarized light into multiple directions without disturbing the line at the
state of polarization. This fiber is also used as a power tap to monitor signal
power in a PM fiber system. A fused coupler is widely used in PM fiber
interferometers, power sharing in polarization sensitive systems, and signal
monitoring in PM fiber systems.

 

Couplers
are generally divided into two categories- passive couplers and active
couplers. The passive couplers are able to redistribute the optical signal
without making optical to electrical conversion while active couplers electric
devices used to split or combine signals electrically using a device called
fiber optic detector and sources for input and output.

 

Based
on applications, the couple has different types. So to make sure you choose the
right coupler, it is crucial to know about them.  Here, we will shed light on some of the most
important ones that are widely used today.

 

T
coupler

 

Also,
called Y coupler, it is a three port device and mainly used for power
monitoring. It is also used for splitting the power input into two equal
outputs.

 

Tree
coupler

 

Its
main work is to split the single input into multiple outputs. It is used as a
combiner to combine multiple output signals.

 

Star
coupler

 

It
is pretty well different from the first two. Unlike them, this coupler has
multiple inputs and multiple outputs. The fibers radiate from the central point
likes a star. And this is why it is called star coupler.

 

Wavelength
selection coupler

 

Also
known as WDM (wavelength division multiplexer, wavelength selection coupler
splits the signal based, not on power.

 

Having
a look at the types of couplers and their applications, it is quite clear that
each of them has a different application. And so they perform well in a
particular situation and meet a particular need. If you are looking a coupler,
it is very important to choose the one that best meets your needs.

 

And
the best way to know which one will work best for you are looking at your
needs. Yes, first of all, you should figure out your requirements. This will
make it easy for you to come out with the right option without wasting your
time.

 

Features
of top couplers for polarization-maintaining

 

In
addition to the types of a coupler, the features of coupler also play a vital
role in selecting. Here are some of the top features that you must consider
when looking for the one for you. A quality fused coupler has:

 

Low
insertion loss

• High
extinction ratio

• Compact
In-Line Package

• Available
for Slow or Fast Axis Operation

• High
Stability and Reliability

 

Whether you are
looking for couplers for the use of Fiber Optic Instruments, Fiber Amplifiers,
Fiber Sensors, or Coherent Detecting devices, choose the one, keeping in mind
the above features. Also, make sure to buy only from top suppliers of
Polarization Maintaining Fused Couplers in China.