http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2004063505-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_da2516f64c612a54ebd89fb6e3115669 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-227 |
| filingDate | 2002-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7915ec0b13ee999d1421f0f56313dbc8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a4fdf13c3497d6f03cafab992817ff07 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4770c053bbff7a7bea0d2e845181246c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cdc4b4b602056bd54d04d368895d7c41 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_808959f90a175e2b2d6d318cab529863 |
| publicationDate | 2004-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2004063505-A |
| titleOfInvention | Distributed feedback semiconductor laser and method of manufacturing the same |
| abstract | An object of the present invention is to secure a high yield and a high light output. The first and second diffraction gratings are arranged apart from each other across a flat coupling layer in the light emission direction so as to form a part of a diffraction grating having a continuous phase at virtually the same grating interval. In the distributed feedback semiconductor laser having the second diffraction grating layers 12a and 12b, a region above the first and second diffraction grating layers and the coupling layer and below the active layer and the coupling layer are formed on a semiconductor substrate. The coupling coefficients κ 1 and κ 2 in the diffraction gratings of the first and second diffraction grating layers are set to different values from each other, and further, of the first and second diffraction grating layers. An anti-reflection film 22 is formed on the light emitting end face on the side of the diffraction grating layer where the coupling coefficient of the diffraction grating is small. [Selection diagram] Fig. 1 |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8494320-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2018040888-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-5177285-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2010116460-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2008205409-A |
| priorityDate | 2002-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.