http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-214411760-U
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0e106154a25296e72132de699559d897 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-042 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-065 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-20 |
| filingDate | 2021-03-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9023c0e9226a246bcdb5a85a6df53f53 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_787359ab8e462c5eac580d5c99fa955a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7f33015e896cc9cefbb36e9cf7feb34c |
| publicationDate | 2021-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-214411760-U |
| titleOfInvention | Distributed feedback laser |
| abstract | The utility model discloses a distributed feedback laser, include: the laser epitaxial structure comprises a substrate and a plurality of epitaxial layers positioned on one side of the substrate; the first electrode layer is positioned on one side, far away from the substrate, of the upper contact layer; the first electrode layer, the upper contact layer and part of the upper optical field limiting layer form a ridge structure and a grating structure group, and the grating structure group is positioned on two sides of the ridge structure; the grating structure group comprises at least two sub-grating structures which are arranged along a first direction, and the grating periods L of the two sub-grating structures are different; the at least two sub-grating structures comprise at least one common lasing mode; the first direction is parallel to the plane of the substrate; and the second electrode layer is positioned on one side of the substrate far away from the epitaxial layer. The utility model discloses effectively reduce the device preparation degree of difficulty and preparation cost, reduce the light loss of device, increase grating preparation precision, show the performance that promotes the device. |
| priorityDate | 2021-03-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.