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.:
- Univ. of California (United States)
- OSTI Identifier:
- 228058
- Patent Number(s):
- 5515461
- 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}
}