Optical module

Details Optical module Optical module

2005-07-19

2005-07-19

Harvey, Minsun Oh (Department: 2828)

Coherent light generators

Optical fiber laser

C385S088000

Reexamination Certificate

active

06920158

ABSTRACT:
An optical fiber that transmits laser beams generated by a laser diode in an optical module is provided with a fiber grating. The fiber grating passes most of the laser beams and reflects some of them to a photodiode provided on the back side of the laser diode. The photodiode also receives scattered laser beams from the laser diode. The photodiode outputs a current equivalent to the amount of received laser beams. An APC circuit controls emission of laser beams by the laser diode based on this current.

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