Optical amplifier evaluation method and optical amplifier evaluation instrument
US6480318B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 17, 2001 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Apr 17, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/0731
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In an optical amplifier evaluation instrument, a rectangular spectrum light source 1 transmits continuous light having a wide-band and flat spectrum shape, a first optical modulator 2 receives and pulse-modulates the continuous light. Further, a second optical modulator 3 operates in the same period as the first optical modulator 2 and performs the on/off pulse operation, thereby providing a sampling window in a time domain for extracting and suppressing an optical signal. A modulation signal generation section 4 performs such control and drive. An optical signal undergoing pulse intensity modulation is input to a measured optical amplifier 6. Post-amplified signal light power for each frequency component and amplified spontaneous emission power for each frequency component in a time domain in which no optical pulse signal exists are measured and operations are performed for each wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.