High channel density wavelength division multiplexer with defined diffracting means positioning
Abstract
A wavelength division multiplexer/demultiplexer having optical path lengths between a fiber array and a Fourier transform lens, and between a dispersion grating and the lens equal to the focal length of the lens. The optical path lengths reduce losses due to angular acceptance mismatch in the multiplexer. Close orientation of the fiber array about the optical axis and the use of a holographic dispersion grating reduces other losses in the system. Multi-exposure holographic dispersion gratings enable the multiplexer/demultiplexer for extremely broad-band simultaneous transmission and reflection operation. Individual Bragg plane sets recorded in the grating are dedicated to and operate efficiently on discrete wavelength ranges.
- Inventors:
-
- Redondo Beach, CA
- Issue Date:
- Research Org.:
- Physical Optics Corp
- OSTI Identifier:
- 867383
- Patent Number(s):
- 4926412
- Assignee:
- Physical Optics Corporation (Torrance, CA)
- Patent Classifications (CPCs):
-
G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- DOE Contract Number:
- AC03-86ER80416
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- channel; density; wavelength; division; multiplexer; defined; diffracting; means; positioning; demultiplexer; optical; path; lengths; fiber; array; fourier; transform; lens; dispersion; grating; equal; focal; length; reduce; losses; due; angular; acceptance; mismatch; close; orientation; axis; holographic; reduces; multi-exposure; gratings; enable; extremely; broad-band; simultaneous; transmission; reflection; operation; individual; bragg; plane; sets; recorded; dedicated; operate; efficiently; discrete; ranges; operate efficiently; path lengths; fiber array; losses due; wavelength range; optical axis; focal length; path length; optical path; fourier transform; wavelength division; angular acceptance; simultaneous transmission; wavelength ranges; transform lens; division multiplexer; /359/
Citation Formats
Jannson, Tomasz P, Jannson, Joanna L, and Yeung, Peter C. High channel density wavelength division multiplexer with defined diffracting means positioning. United States: N. p., 1990.
Web.
Jannson, Tomasz P, Jannson, Joanna L, & Yeung, Peter C. High channel density wavelength division multiplexer with defined diffracting means positioning. United States.
Jannson, Tomasz P, Jannson, Joanna L, and Yeung, Peter C. Mon .
"High channel density wavelength division multiplexer with defined diffracting means positioning". United States. https://www.osti.gov/servlets/purl/867383.
@article{osti_867383,
title = {High channel density wavelength division multiplexer with defined diffracting means positioning},
author = {Jannson, Tomasz P and Jannson, Joanna L and Yeung, Peter C},
abstractNote = {A wavelength division multiplexer/demultiplexer having optical path lengths between a fiber array and a Fourier transform lens, and between a dispersion grating and the lens equal to the focal length of the lens. The optical path lengths reduce losses due to angular acceptance mismatch in the multiplexer. Close orientation of the fiber array about the optical axis and the use of a holographic dispersion grating reduces other losses in the system. Multi-exposure holographic dispersion gratings enable the multiplexer/demultiplexer for extremely broad-band simultaneous transmission and reflection operation. Individual Bragg plane sets recorded in the grating are dedicated to and operate efficiently on discrete wavelength ranges.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 1990},
month = {Mon Jan 01 00:00:00 EST 1990}
}
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