| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c512af6482bd66d2c8760c77cf9ead6 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-18302
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-2027
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-18311
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-1032
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S2301-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-5072
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-0611 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-5027
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01S5-0265 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-026 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-183
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01S5-40 |
| filingDate |
2001-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2005-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2cadf5c4940f176d136df0a89084dc06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_34e1b7a3aaf5633cb0c003ea67a7ad5c |
| publicationDate |
2005-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-6891664-B2 |
| titleOfInvention |
Multistage tunable gain optical amplifier |
| abstract |
A multi-stage tunable gain optical amplifier device amplifies an optical signal by a gain amount which can be adjusted in one of the stages of the amplifier. The multi-stage amplifier includes at least two optical amplifier stages coupled in series, one of which is a tunable gain amplifier stage. The optical amplifier stages are characterized by a design parameter which varies from stage to stage. In a preferred embodiment, the design parameter includes a noise figure and a saturable power, with both parameters increasing as the optical signal propagates from stage to stage. As a result, the multi-stage tunable gain optical amplifier can achieve better noise performance and higher output power than a single stage optical amplifier with a constant noise figure and saturable power. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7265898-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006050364-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005152026-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005063044-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7081990-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005111079-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7099075-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005012988-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7079310-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004246567-A1 |
| priorityDate |
1999-03-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |