Calibration of laser systems
US6891866B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2003 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Sep 19, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/06808
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for determining a condition of the laser system includes determining a change in a laser current from an initial value. A method for measuring a laser current includes determining a difference between the values of a power supply current, which is the value of the laser current. A method for measuring a transmitted power includes generating a first control signal that sets a magnitude of a bias current supplied to a laser, generating a second control signal that sets a of a modulation current supplied to the laser, and determining a difference between values of a high and a low transmitted powers. A method for measuring a received optical power includes determining a received OMA corresponding to the power signal, which is the transmitted OMA minus a known loss through a calibration fiber that couples the laser transmitter to the laser receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.