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Optical beams traveling in a singlemode fiber experience random birefringence, which could make it difficult or impossible
for fiberoptic Michelson interferometer to function properly. Faraday rotator mirrors take the output beam from a
singlemode fiber and rotate the polarization by 90 degrees before sending it back through the same fiber.
By doing so, a Faraday mirror functions as a phase conjugate mirror and cancels out any birefringent effects the beam
experienced along the forward path.
Princetel's FRM series Faraday rotator mirrors offer strong suppression against secondary reflections (-55 dB), a feature critical to
most interferometer applications.
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SPECIFICATIONS |
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PARAMETERS |
VALUES |
Wavelength |
1310 or 1550 nm |
Insertion loss |
<1 dB (typical: 0.5 dB) |
Polarization rotation accuracy |
<+/-2 deg. (typical: <+/-1 deg.) |
Return loss |
>55 dB (non reflective surfaces) |
Pulling strength |
10 N (900 um jacket) |
Optical power handling |
23 dBm |
Working temperature |
-40 to 65 C |
Storage temperature |
-60 to 85 C |
Humidity tolerance |
95% RH non condensing |
Housing material |
Stainless steel |
Fiber types |
Corning SMF28 with 900 um buffer |
Connector types |
FC, SC, ST, SMA, or LC |
Dimensions |
6 mm dia. x 9 mm length or 4 mm dia. x 20 mm length |
Weight |
4 g |
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