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Title: Polarization-independent optical wavelength filter for channel dropping applications

Abstract

The polarization dependence of optical wavelength filters is eliminated by using waveguide directional couplers. Material birefringence is used to compensate for the waveguide (electromagnetic) birefringence which is the original cause of the polarization dependence. Material birefringence is introduced in a controllable fashion by replacing bulk waveguide layers by finely layered composites, such as multiple quantum wells using III-V semiconductor materials. The filter has use in wavelength-division multiplexed fiber optic communication systems. This filter has broad application for wavelength-tunable receivers in fiber optic communication links, which may be used for telecommunications, optical computer interconnect links, or fiber optic sensor systems. Since multiple-wavelength systems are increasingly being used for all of these applications, the filter is useable whenever a rapidly tunable, wavelength-filtering receiver is required. 14 figs.

Inventors:
;
Issue Date:
Research Org.:
University of California
OSTI Identifier:
228058
Patent Number(s):
5,515,461
Application Number:
PAN: 8-262,716
Assignee:
Univ. of California, Oakland, CA (United States)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 7 May 1996
Country of Publication:
United States
Language:
English
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; 99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS; OPTICAL FILTERS; DESIGN; DATA TRANSMISSION SYSTEMS; OPTICAL COMPUTERS; MEASURING INSTRUMENTS; USES; OPTICAL FIBERS

Citation Formats

Deri, R J, and Patterson, F. Polarization-independent optical wavelength filter for channel dropping applications. United States: N. p., 1996. Web.
Deri, R J, & Patterson, F. Polarization-independent optical wavelength filter for channel dropping applications. United States.
Deri, R J, and Patterson, F. Tue . "Polarization-independent optical wavelength filter for channel dropping applications". United States.
@article{osti_228058,
title = {Polarization-independent optical wavelength filter for channel dropping applications},
author = {Deri, R J and Patterson, F},
abstractNote = {The polarization dependence of optical wavelength filters is eliminated by using waveguide directional couplers. Material birefringence is used to compensate for the waveguide (electromagnetic) birefringence which is the original cause of the polarization dependence. Material birefringence is introduced in a controllable fashion by replacing bulk waveguide layers by finely layered composites, such as multiple quantum wells using III-V semiconductor materials. The filter has use in wavelength-division multiplexed fiber optic communication systems. This filter has broad application for wavelength-tunable receivers in fiber optic communication links, which may be used for telecommunications, optical computer interconnect links, or fiber optic sensor systems. Since multiple-wavelength systems are increasingly being used for all of these applications, the filter is useable whenever a rapidly tunable, wavelength-filtering receiver is required. 14 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {5}
}