EP 1733267 A4 20080326 - DOUBLE DIFFRACTION GRATING PLANAR LIGHTWAVE CIRCUIT
Title (en)
DOUBLE DIFFRACTION GRATING PLANAR LIGHTWAVE CIRCUIT
Title (de)
PLANARE LICHTWELLENSCHALTUNG MIT DOPPELBEUGUNGSGITTER
Title (fr)
CIRCUIT PLAN A ONDES LUMINEUSES A RESEAU DE DOUBLE DIFFRACTION
Publication
Application
Priority
- CA 2005000352 W 20050307
- US 55568604 P 20040324
- US 92398704 A 20040824
Abstract (en)
[origin: WO2005091032A1] The invention relates to a planar lightwave circuit including a pair of opposed concave reflective diffraction gratings sharing the same focal line, which separates first and second slab waveguide regions. The ends of input and output waveguides are positioned along the focal line for launching and receiving light directed by one or both of the diffraction gratings. The invention enables light within in a certain wavelength range to be launched from an input waveguide, directed by a single diffraction grating, and output waveguides, all within a single slab waveguide region, while light within another wavelength range will be directed from one diffraction grating to another for output waveguides in a different slab waveguide region.
IPC 8 full level
G02B 5/18 (2006.01); G02B 6/12 (2006.01); G02B 6/124 (2006.01); G02B 6/34 (2006.01)
CPC (source: EP KR)
G02B 6/12 (2013.01 - KR); G02B 6/12007 (2013.01 - EP); G02B 6/124 (2013.01 - EP); G02B 6/293 (2013.01 - KR); G02B 6/34 (2013.01 - KR); G02B 6/42 (2013.01 - KR)
Citation (search report)
- [X] US 5355237 A 19941011 - LANG ROBERT J [US], et al
- [A] US 2002186925 A1 20021212 - LU YING-TSUNG [TW], et al
- [A] JP S61223711 A 19861004 - NIPPON SHEET GLASS CO LTD
- [A] US 5937113 A 19990810 - HE JIAN-JUN [CA], et al
- See references of WO 2005091032A1
Designated contracting state (EPC)
DE DK FR GB IT SE
DOCDB simple family (publication)
WO 2005091032 A1 20050929; CA 2560329 A1 20050929; CA 2560329 C 20111115; EP 1733267 A1 20061220; EP 1733267 A4 20080326; EP 2259109 A1 20101208; JP 2007530993 A 20071101; KR 20070011327 A 20070124; NO 20064795 L 20061023
DOCDB simple family (application)
CA 2005000352 W 20050307; CA 2560329 A 20050307; EP 05714593 A 20050307; EP 10179316 A 20050307; JP 2007504220 A 20050307; KR 20067019691 A 20060922; NO 20064795 A 20061023