Etalon arrangement
US5828689A · kind A · utility
23Cited by
2References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1997 |
| Grant date | Oct 27, 1998 |
| Priority date | — |
| Expiry date | Apr 30, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0687
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A control system for an etalon arrangement 4, in an optical transmission system involves applying a dither to a laser 1 upstream of the arrangement, monitoring the output of the arrangement, and using a control means 3 to lock the laser frequency to the etalon arrangement response, or vice versa. The control means operates on the basis of a ratio of derivatives of the monitored output with respect to wavelength, to enable locking to a point on the response curve, independent of power variations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.