http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2002111125-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e5db580deca7130dbe51805c6c608b35 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-2059 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-1228 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-12 |
| filingDate | 2000-10-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8d4acbd9a66c69f7c16db5a125dffbd2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_96a53dbc42cd2d4f27bc7fd8d515d3bd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a5b7b744c58881d3e3b4e3a55f3cae3a |
| publicationDate | 2002-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2002111125-A |
| titleOfInvention | Distributed feedback semiconductor laser |
| abstract | (57) [Summary] The present invention provides a structure of a gain-coupled DFB laser capable of further improving the stability of single mode oscillation and further increasing the threshold current. With the goal. A DFB laser according to the present invention has an active layer having a periodic uneven shape and a film thickness periodically fluctuating, and is provided in a concave region of the active layer, and narrows a current to form the active layer. And a current block layer for selectively leading to the convex region. With this structure, according to the present invention, the thickness of the active layer has a periodic fluctuation in the light waveguide direction, and most of the current injected from the outside is converted into a thick region (convex) of the active layer. Region) can be selectively implanted. Therefore, the ratio of the gain coupling component to the refractive index coupling component can be made larger than before, and the threshold current can be made lower than before. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2013214648-A |
| priorityDate | 2000-10-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.