Article comprising a planar optical waveguide mach-zehnder inter

Details Article comprising a planar optical waveguide mach-zehnder inter Article comprising a planar optical waveguide mach-zehnder inter

1996-02-21

1997-06-03

Ullah, Akm E.

Optical waveguides

Planar optical waveguide

G02B 610

Patent

active

056363095

ABSTRACT:
The disclosed Mach-Zehnder (MZ)-type devices are planar waveguide devices, with interferometer arms of essentially equal length, with a maximum spacing between the arms (e.g., between the waveguide core centers) selected to make possible simultaneous exposure of both arms to refractive index-altering radiation. Exemplarily the maximum spacing is in the range 20-100 .mu.m. The simultaneous exposure of both waveguides makes it possible to form gratings of essential equal strength, such that typically no individual trimming is required. The resulting devices (typically add-drop filters) are substantially less sensitive to environmental changes (e.g., temperature gradients, mechanical vibrations) than prior art fiber-based devices, and are advantageously used in, for instance, WDM optical communication systems.

REFERENCES:
patent: 4900119 (1990-02-01), Hill et al.
patent: 5195161 (1993-03-01), Adar et al.
patent: 5276743 (1994-01-01), Penner et al.
patent: 5459801 (1995-10-01), Snitzer
"An All-Fiber Dense-Wavelength-Division Multiplexer/Demultiplexer Using Photoimprinted Bragg Gratings", by F. Bilodeau et al., IEEE Photonics Technology Letters, vol. 7, No. 4, Apr. 1995, pp. 388-390.
"Laser-Trimmed Four-Port Bandpass Filter Fabricated in Single-Mode Photosensitive Ge-Doped Planar Waveguide", by R. Kashyap et al., IEEE Photonics Technology Letters, vol. 5, No. 2, Feb. 1993, pp. 191-194.
"Four-Channel Wavelength Division Multiplexers and Bandpass Filters Based on Elliptical Bragg Reflectors", by C. H. Henry et al., Journal of Lightwave Technology, vol. 8, No. 5, May 1990, pp. 748-755.
"Glass Waveguides on Silicon for Hybrid Optical Packaging", by C. H. Henry, Journal of Lightwave Technology, vol. 7, No. 10, Oct. 1989, pp. 1530-1539.

Affiliated with

Also associated with

Rating

Article comprising a planar optical waveguide mach-zehnder inter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Article comprising a planar optical waveguide mach-zehnder inter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Article comprising a planar optical waveguide mach-zehnder inter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-398107