Linear filter based wavelength locking optical sub-assembly...

Details Linear filter based wavelength locking optical sub-assembly... Linear filter based wavelength locking optical sub-assembly...

2005-03-08

2005-03-08

Font, Frank G. (Department: 2877)

Optics: measuring and testing

By configuration comparison

With comparison to master, desired shape, or reference voltage

C356S435000, C356S445000

Reexamination Certificate

active

06864980

ABSTRACT:
A wavelength detector includes a beam splitter block that taps off two spatially separated beams and a linear filter in an optical path of one of the two beams. The linear filter may be provided on the beam splitter block. The linear filter may be a notch anti-reflective filter in the optical path of the application beam. One or both of the beams may be focused on to their respective detectors.

REFERENCES:
patent: 5896201 (1999-04-01), Fukushima
patent: 6639679 (2003-10-01), Frojdh
patent: 6661818 (2003-12-01), Feldman et al.

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