Optical spectrum analyzer and method for controlling output of optical amplifier
US5861980A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 6, 1996 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Sep 6, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/078
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is an optical spectrum analyzer which has: a pulse oscillator for generating a pulse; an optical switch for switching a signal light in response to the pulse; an optical circulator which has at least three input-output ports and in which the output of the optical switch is connected to a first port of the optical circulator; a plurality of fiber gratings which are in series connected to a second port of the optical circulator to which a signal light entered into the first port is output, the fiber gratings having different Bragg wavelengths, respectively; and an optical detector which is connected to a third port of the optical circulator to which a reflected light from the fiber gratings is output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.