Optimize PM Fiber Alignment for Different Applications with PER Testers
Brand Name:YOGEL
Certification:ISO9000
Minimum Order Quantity:1
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Place of Origin:CHINA
Price:negotiate
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Location:
Shanghai Shanghai China
Address:
3F, No. 322, Lane 953, Jianchuan Road Minhang District, Shanghai City China - 200 240
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Product Details
Extinction Ratio Tester
The benchtop unit uses the rotating polarizer method to quickly and
accurately measure the polarization extinction ratio (PER) of
polarization-maintaining (PM) fibers, which makes it easy to
optimize the alignment of PM fibers for different applications,
such as making PM pigtails for laser diodes, improving the coupling
efficiency of linearly-polarized light to PM fibers, making splices
for PM fibers and fusion splicing of PM fibers.
SLD and ASE broadband light sources are more suitable for use as
light sources for aligning PM fibers. They generally emit light of
unknown polarization, so a polarizer is added in front of the fiber
input to generate line-polarized light; it is recommended that the
transmission axis of the polarizer be perpendicular to the base
plate. If the splice key is aligned with the slow axis of the PM
fiber and the splice key is in the vertical direction, then the
light is coupled in the slow axis of the PM fiber.
Feature:
High extinction ratio
Low insertion loss
High stability and reliability
Low insertion loss
High stability and reliability
Application:
Fiber Laser
Fiber Amplifier
Fiber Optic Sensing
Fiber Optic Communication
Instrumentation
Fiber Amplifier
Fiber Optic Sensing
Fiber Optic Communication
Instrumentation
Application 1: Fabrication of PM pigtails for laser diodes The
coherent nature of the laser light has to be taken into account
here, as it can lead to erroneous components in the PER results.
Therefore, in addition to optimizing the current extinction ratio,
the effect of pseudo-polarized light needs to be reduced by
applying stresses as a means of determining a conservative value of
ERmin as well as the optimal direction of rotation of the PM fiber.
Application 2: Aligning Line Polarized Light and PM Fiber Patch
Cords The use of an SLD or ASE light source is recommended here,
and the alignment procedure is as follows: 1. Insert the output
connector of the PM fiber into the extinction ratio tester's fiber
adapter, and then turn on the unit. 2. Connect the input of the
FiberBench to an SLD light source, and the input connector of the
PM fiber to the output of the FiberBench. 3. The FiberBench is
equipped with a polarizer, but the coupling optics depend on the
light source, so they are not listed here.3. Display the actual ER
value in ER mode.4. Rotate the fiber until the maximum ER value is
displayed. Application 2: Aligning Line Polarized Light and PM
Fiber Patch Cords It is recommended to use an SLD or ASE light
source for this application. The alignment procedure is as follows:
1. Insert the output connector of the PM fiber into the fiber
adapter of the extinction ratio tester, and turn on the unit. 2.
Connect the input of the FiberBench to the SLD light source, and
connect the input connector of the PM fiber to the output of the
FiberBench. 3. The FiberBench is equipped with a polarizer, but the
coupling optics depend on the light source, so they are not listed
here.3. Display the actual ER value in ER mode.4. Rotate the fiber
until the maximum ER value is displayed.
Optimize PM Fiber Alignment for Different Applications with PER Testers
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