Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f5c80aa85e1b91c32be4359200ecf66b |
classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B2006-12159 |
classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B6-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B6-1221 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B6-12007 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B6-29352 |
classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B6-34 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B6-122 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B6-12 |
filingDate |
2003-03-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
grantDate |
2004-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0775d4aea1d789a0552dbbdf56162117 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_700d1c3bc47c007b80d63366785ba6ce |
publicationDate |
2004-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
US-6836598-B2 |
titleOfInvention |
Optical waveguide coupler circuit device |
abstract |
The present invention relates to an optical waveguide coupler device. As shown in FIG. 1, the optical waveguide coupler device 8 comprises two optical waveguide cores 2, 3 formed on the surface of a substrate 1. The optical waveguide cores 2, 3 are covered by lower and upper cladding layers 6, 7 both formed on the substrate 1; and the two optical waveguide cores 2, 3 are brought close to and in parallel with each other at two sites to form two directional couplers 4, 5 there. The cross-section and refractive index of each of the optical waveguide cores 2, 3 and the parameters of other elements of the circuit are optimized such that an optical signal is reliably routed by the circuit without undergoing a wavelength shift even when the circuit is exposed to the changes of ambient temperature. |
isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006140569-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004208421-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11768337-B2 |
priorityDate |
2002-03-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |