Optical filter device

Details Optical filter device Optical filter device

1989-04-27

1992-01-28

LaRoche, Eugene R.

Coherent light generators

Particular resonant cavity

Distributed feedback

372 50, 359240, H01S 308, H01S 319, G02F 101

Patent

active

050848976

ABSTRACT:
An optical filter device comprises a distributed feedback region and an active region which are arranged in series and coupled optically, and anti-reflection structures which are positioned at both ends of the distributed feedback region and active region thus coupled to be in contact therewith so that a predetermined wavelength of an optical signal is selected from optical signals of, for instance, as much as 60 channels so that a wavelength selection can be performed in a narrow bandwidth of less than approximately 1 to 2 .ANG. and in a wide tuning range of an optical signal wavelength in accordance with a carrier injection thereinto.

REFERENCES:
patent: 4575851 (1986-03-01), Seki et al.
patent: 4719636 (1988-01-01), Yamaguchi et al.
patent: 4720835 (1988-01-01), Akiba et al.
patent: 4744089 (1988-05-01), Montroll et al.
patent: 4856005 (1989-08-01), Oe et al.
patent: 4899361 (1990-02-01), Numai

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