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Title: High channel density wavelength division multiplexer with defined diffracting means positioning

Abstract

A wavelength division multiplexer/demultiplexer is disclosed 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. 11 figs.

Inventors:
; ;
Issue Date:
Research Org.:
Physical Optics Corp
OSTI Identifier:
7165176
Patent Number(s):
4926412 A
Application Number:
PPN: US 7-158396
Assignee:
Physical Optics Corp., Torrance, CA (United States) OAK; EDB-94-117935
DOE Contract Number:  
AC03-86ER80416
Resource Type:
Patent
Resource Relation:
Patent File Date: 22 Feb 1988
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; MULTIPLEXERS; DESIGN; GRATINGS; HOLOGRAPHY; OPTICAL FIBERS; VISIBLE RADIATION; WAVELENGTHS; ELECTROMAGNETIC RADIATION; ELECTRONIC EQUIPMENT; EQUIPMENT; FIBERS; RADIATIONS; 426000* - Engineering- Components, Electron Devices & Circuits- (1990-)

Citation Formats

Jannson, T.P., Jannson, J.L., and Yeung, P.C. High channel density wavelength division multiplexer with defined diffracting means positioning. United States: N. p., 1990. Web.
Jannson, T.P., Jannson, J.L., & Yeung, P.C. High channel density wavelength division multiplexer with defined diffracting means positioning. United States.
Jannson, T.P., Jannson, J.L., and Yeung, P.C. Tue . "High channel density wavelength division multiplexer with defined diffracting means positioning". United States.
@article{osti_7165176,
title = {High channel density wavelength division multiplexer with defined diffracting means positioning},
author = {Jannson, T.P. and Jannson, J.L. and Yeung, P.C.},
abstractNote = {A wavelength division multiplexer/demultiplexer is disclosed 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. 11 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {5}
}