Optical waveguides – Integrated optical circuit
Patent
1995-06-19
1996-07-30
Healy, Brian
Optical waveguides
Integrated optical circuit
385 15, 385 24, 385 37, 385 42, 385 46, 385132, 359115, 359117, 359578, 359579, 359890, G02B 612, H04J 1400
Patent
active
055420109
ABSTRACT:
A monolithically integrated wideband optical filter which is rapidly tunable to a large number of optical frequencies over a wide optical frequency range comprises two series connected optical filters of different resolutions formed in a semiconductive wafer. A control circuit applies electrical energy to predetermined controllably transmissive waveguides connecting components of the filters defined in the wafer. This tunes the overall filter to a desired one of a plurality of optical frequencies. Application of such electrical energy creates frequency selective pathways through the wafer able to pass one of up to hundreds of selected optical frequencies over the entire bandwidth of a semiconductive medium. This filter is economical to construct and is useful in high capacity, high speed optical communications networks.
REFERENCES:
patent: 4244045 (1981-01-01), Nosu et al.
patent: 4960310 (1990-10-01), Cushing
patent: 4969043 (1990-11-01), Pothier
patent: 5002350 (1991-03-01), Dragone
patent: 5051590 (1991-09-01), Kern et al.
patent: 5136671 (1992-08-01), Dragone
patent: 5339157 (1994-08-01), Glance et al.
patent: 5341444 (1994-08-01), Henry et al.
patent: 5367586 (1994-11-01), Glanoe et al.
patent: 5373516 (1994-12-01), Glance et al.
patent: 5373517 (1994-12-01), Dragone et al.
patent: 5390200 (1995-02-01), Zirngibl
patent: 5414548 (1995-05-01), Tachikawa et al.
patent: 5461685 (1995-10-01), Glance et al.
patent: 5488680 (1996-01-01), Dragone
"FDM-FSK Star Network With a Tunable Optical Filter Demultiplexer," I. P. Kaminow, et al., Electronics Letters, vol. 23, No. 21, Oct. 8, 1987, pp. 1102-1103.
"An N.times.N Optical Multiplexer Using a Planar Arrangement of Two Star Couplers," IEEE Photonics Technology Letters, vol. 3, No. 9, Sep. 1991, pp. 812-815.
"Applications of the Integrated Waveguide Grating Router", Journal of Lightwave Technology, vol. 12, No. 6, Jun. 1994, pp. 957-962.
"High Performance Optical Waveguide Shifter," Electonics Letters, vol. 28, No. 18, Aug. 27, 1992, pp. 1714-1715.
Glance Bernard
Wilson Robert W.
AT&T Corp.
Healy Brian
Indyk Eugene S.
LandOfFree
Rapidly tunable wideband integrated optical filter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rapidly tunable wideband integrated optical filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rapidly tunable wideband integrated optical filter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1666863