Polarization coupler

Details Polarization coupler Polarization coupler

1990-06-18

1991-05-14

Gonzalez, Frank

G02B 626

Patent

active

050150553

ABSTRACT:
A polarization coupler in which a polarization maintaining fiber is employed and a process of producing such polarization coupler are disclosed. Where the polarization coupler is used, beams of light from two laser diodes can be introduced into a single optical fiber and light for the monitoring can be split from a main signal output. Since minimum components required to realize the function are a rotator, a birefringent plate and two or three polarization maintaining fibers, the polarization coupler is superior in operability in production and is suitable for miniaturization. The branching ratio of light for monitoring can be adjusted by adjustment of the angle of rotation of light by the rotator.

REFERENCES:
patent: 4606605 (1986-08-01), Ashkin et al.
patent: 4737005 (1988-04-01), Burns et al.
patent: 4801189 (1989-01-01), Shaw et al.
patent: 4917449 (1990-04-01), Granestrand

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