Laser diode module and depolarizer

Details Laser diode module and depolarizer Laser diode module and depolarizer

1995-10-30

1997-11-25

Palmer, Phan T. H.

Optical waveguides

With disengagable mechanical connector

Optical fiber to a nonfiber optical device connector

385 93, 385 36, 385 33, 385 35, G02B 636

Patent

active

056920822

ABSTRACT:
A compact, inexpensive laser diode module having a depolarizer function of converting linearly polarized light into unpolarized light. The laser diode module includes a laser diode; a polarization-maintaining optical fiber arranged so that an axis of polarization of the fiber forms an angle of 45.degree. with respect to a plane of polarization of incident light, the fiber having a length set so that an optical path difference between two polarization modes of transmitted light is greater than a coherence length of the incident light; and an optical coupling element for coupling emitting light from the laser diode to the polarization-maintaining optical fiber.

REFERENCES:
patent: 4375910 (1983-03-01), Seki
patent: 5276747 (1994-01-01), Pan
patent: 5291571 (1994-03-01), Kunikane et al.

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