Wavelength monitor, optical module, and optical module...

Details Wavelength monitor, optical module, and optical module... Wavelength monitor, optical module, and optical module...

2006-12-12

2006-12-12

Evans, F. L. (Department: 2877)

Optics: measuring and testing

By shade or color

With color transmitting filter

C372S032000

Reexamination Certificate

active

07148965

ABSTRACT:
A wavelength filter is disposed between a laser diode and a photodiode that receives the rear-facet output light of the laser diode. Either a part on one side of an input or an output surface of the wavelength filter is bounded to a protrusion provided in a metal holder for holding the wavelength filter. As a result, a support structure is obtained that does not bring a damage on the wavelength filter caused by degradation of optical characteristics or temperature variation of the wavelength filter when support-fixing a wavelength filter having a complex refractive index crystal.

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Unpublished U.S. Appl. No. 10/250,454, Masao Imaki, et al., “Wave plate, wavelength filter, and wavelength monitor”, filed Dec. 12, 2003.

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