EP 1259855 A1 20021127 - OPTICAL DEVICE
Title (en)
OPTICAL DEVICE
Title (de)
OPTISCHE VORRICHTUNG
Title (fr)
DISPOSITIF OPTIQUE
Publication
Application
Priority
- GB 0200494 W 20020205
- GB 0102957 A 20010206
Abstract (en)
[origin: WO02063389A1] An optical device comprises a substrate on which is provided two input waveguides (100, 110) connected to a first optical coupler (120), two output waveguides (130, 140) connected to a second optical coupler (150), and a pair of waveguide arms (160, 170) connected between the two couplers, wherein the first optical coupler comprises two waveguide portions (122, 124), a first one of which has a greater relative width than the second, and wherein the second optical coupler comprises two waveguide portions (152, 154), the first one of which has a smaller relative width than the second, the first waveguide portion of the first coupler being connected by a first one of the waveguide arms to the first waveguide portion of the second coupler, and the second waveguide portion of the first coupler being connected by the second waveguide arm to the second waveguide portion of the second coupler.
IPC 1-7
IPC 8 full level
G02F 1/313 (2006.01)
CPC (source: EP)
G02F 1/3132 (2013.01)
Citation (search report)
See references of WO 02063389A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 02063389 A1 20020815; EP 1259855 A1 20021127; GB 0102957 D0 20010321
DOCDB simple family (application)
GB 0200494 W 20020205; EP 02710182 A 20020205; GB 0102957 A 20010206