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
- Application Number:
- PPN: US 7-158396
- Assignee:
- Physical Optics Corp., Torrance, CA (United States)
- 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 = {Tue May 15 00:00:00 EDT 1990},
month = {Tue May 15 00:00:00 EDT 1990}
}