Optoelectronic module with integrated monitoring photodiode array for a parallel optical transmitter
US7961770B1 · kind B1 · utility
6Cited by
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20Claims
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Key dates
| Filing date | Mar 17, 2010 |
| Grant date | Jun 14, 2011 |
| Priority date | — |
| Expiry date | Mar 17, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/423
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A power monitoring system uses a low loss reflective element to partially split the output laser beams from an array of laser sources, in a parallel configuration, to produce a monitor beams for each laser source. Each of these monitor beams may propagate within the reflective element in a lossless manner under total internal reflection and into one of a plurality of photodiodes that sense an optical characteristic such as output beam intensity, where this sensed signal is then used as part of a feedback control to control operation of the laser sources in the array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.