Title:
TEMPERATURE-COMPENSATED BULK DIFFRACTION GRATING FOR WAVELENGHT DIVISION MULTIPLEXER (WDM)
Document Type and Number:
WIPO Patent Application WO2001094998
Kind Code:
A3
Abstract:
An improved diffraction grating for wavelength division multiplexing/demultiplexing devices is disclosed. The improved diffraction grating has a glass substrate, a polymer grating layer located adjacent to the glass substrate, and a metal coating layer located adjacent to the polymer grating layer. The improvement comprises a polymer coating layer located adjacent to the metal coating layer, and a glass cover located adjacent to the polymer coating layer, wherein the polymer coating layer and the glass cover compensate for thermal characteristics associated with the polymer grating layer and the glass substrate, respectively.
Inventors:
ZHU NINGHUI
TURNER IAN
YUDIN YURI A
SOKOLSKIY MIKHAIL N
WADE ROBERT K
TURNER IAN
YUDIN YURI A
SOKOLSKIY MIKHAIL N
WADE ROBERT K
Application Number:
PCT/US2001/017834
Publication Date:
March 13, 2003
Filing Date:
June 01, 2001
Export Citation:
Assignee:
LIGHTCHIP INC (US)
International Classes:
G02B5/18; G02B6/34; G02B7/00; (IPC1-7): G02B6/34
Domestic Patent References:
| WO2001020372A2 | 2001-03-22 |
Foreign References:
| US3698795A | 1972-10-17 | |||
| US6055349A | 2000-04-25 | |||
| US5991482A | 1999-11-23 | |||
| US5799118A | 1998-08-25 |
Other References:
MOSHREFZADEH R S ET AL: "TEMPERATURE DEPENDENCE OF INDEX OF REFRACTION OF POLYMERIC WAVEGUIDES", JOURNAL OF LIGHTWAVE TECHNOLOGY, IEEE. NEW YORK, US, vol. 10, no. 4, 1 April 1992 (1992-04-01), pages 420 - 425, XP000272899, ISSN: 0733-8724
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 11 30 September 1999 (1999-09-30)
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 11 30 September 1999 (1999-09-30)
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