| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f56b5174f7d196258707ccf1d609796e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04B10-503
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-0683
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-4087 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-1246
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04B10-503
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-0287
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-0654
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-1039
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-124
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04J14-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-10 |
| filingDate |
2017-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ff1a95c6aa8c3a8a0cd3b386cf08a5f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_78aa59ab5e4b1e763ec36dd07cad1bb1 |
| publicationDate |
2018-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2018175589-A1 |
| titleOfInvention |
Semiconductor laser, light source unit, communication system, and wavelength division multiplexing optical communication system |
| abstract |
Provided is a distributed feed back semiconductor laser including a phase shift part capable of obtaining an excellent single-mode yield and a high luminous efficiency. A diffraction grating ( 105 ) is formed so as to extend in a guiding direction of a resonator between an end surface at which a low reflective film ( 111 ) is formed and an end surface at which a high reflective film ( 110 ) is formed. In diffraction grating ( 105 ) a plurality of phase shift parts ( 106 ) that discontinuously change a phase of the diffraction grating ( 105 ) in a predetermined range separated from the end surface at which the low reflective film ( 111 ) is formed are disposed. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111147144-A |
| priorityDate |
2016-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |