http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2007042737-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5d7576285d411d00c697e07270d2814a |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-323 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-12 |
| filingDate | 2005-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d26c6f3d5f10669712d8e2001e37d487 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0d985852894d02a780259c918c3b1c8c |
| publicationDate | 2007-02-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2007042737-A |
| titleOfInvention | Semiconductor laser |
| abstract | PROBLEM TO BE SOLVED: To provide a semiconductor laser having reduced clock signal output frequency noise under high running conditions and high clock reproduction sensitivity. A semiconductor laser includes an n-type InP substrate 1, an n-type InP clad layer 2 formed on the n-type InP substrate 1, an InGaAsP optical waveguide layer 3 formed on the n-type InP clad layer 2, and the like. A forward distributed feedback active region 101, a backward distributed feedback active region 103, and a p-type InP cladding layer 4 formed so as to embed the diffraction grating 5. The absolute value of the difference between the square root of the sideband reflectivity R1 of the front distributed feedback active region 101 and the square root of the reflectivity R2 of the sideband of the rear distributed feedback active region under the element driving condition is 0.25 or less. Thus, the diffraction gratings 5 of the front distributed feedback active region 101 and the rear distributed feedback active region 103 are adjusted. [Selection] Figure 2 |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2009043292-A1 |
| priorityDate | 2005-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 18.