Title:
ARRAY GRATING FILTERS AS SEGMENTED WAVEGUIDE
Document Type and Number:
WIPO Patent Application WO2003042737
Kind Code:
A3
Abstract:
An optical device for filtering an optical signal is described. The optical filtering device comprises an optical input receiving the optical signal; an elongated waveguide connected to the input and having a modified transverse dimension to create a series of partially reflective segments having predetermined effective indices of refraction (neff) with a distribution within the waveguide to provide the filtering of the optical signal, wherein the segments are designed for single mode operation and wherein a reflected filtered output optical signal is generated, wherein the transverse dimension varies within a narrow range over which a transverse size of the mode remains close to its minimum value; an optical output connected to the waveguide for providing the filtered optical signal.
Inventors:
DUGUAY MICHEL A (CA)
GRONDIN ETIENNE (CA)
GRONDIN ETIENNE (CA)
Application Number:
PCT/CA2002/001752
Publication Date:
September 04, 2003
Filing Date:
November 15, 2002
Export Citation:
Assignee:
UNIV LAVAL (CA)
DUGUAY MICHEL A (CA)
GRONDIN ETIENNE (CA)
DUGUAY MICHEL A (CA)
GRONDIN ETIENNE (CA)
International Classes:
G02B6/122; G02B6/124; G02B6/12; G02B6/34; (IPC1-7): G02B6/293; G02B6/124; G02B6/34; G02B6/12
Domestic Patent References:
| WO1999042899A1 | 1999-08-26 | |||
| WO2001011401A1 | 2001-02-15 |
Foreign References:
| EP0810454A1 | 1997-12-03 | |||
| US5333216A | 1994-07-26 | |||
| EP0761616A2 | 1997-03-12 |
Other References:
WONG V V ET AL: "RIDGE-WAVEGUIDE SIDEWALL-GRATING DISTRIBUTED FEEDBACK STRUCTURES FABRICATED BU X-RAU LITHOGRAPHY", JOURNAL OF VACUUM SCIENCE AND TECHNOLOGY: PART B, AMERICAN INSTITUTE OF PHYSICS. NEW YORK, US, vol. 11, no. 6, 1 November 1993 (1993-11-01), pages 2621 - 2624, XP000423417, ISSN: 0734-211X
GONG J ET AL: "Analysing distributed feedback waveguides", IEE PROCEEDINGS: OPTOELECTRONICS, INSTITUTION OF ELECTRICAL ENGINEERS, STEVENAGE, GB, vol. 146, no. 6, 14 December 1999 (1999-12-14), pages 253 - 258, XP006013648, ISSN: 1350-2433
GONG J ET AL: "Analysing distributed feedback waveguides", IEE PROCEEDINGS: OPTOELECTRONICS, INSTITUTION OF ELECTRICAL ENGINEERS, STEVENAGE, GB, vol. 146, no. 6, 14 December 1999 (1999-12-14), pages 253 - 258, XP006013648, ISSN: 1350-2433
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