Wavelength locking and power control systems for multi-channel photonic integrated circuits (PICS)
US7680364B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2006 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Feb 24, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/50
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A transmissive active channel element is provided in each signal channel of a monolithic multi-channel TxPIC where each channel also includes a modulated source. The active channel element functions both as a power control element for both monitoring and regulating the output channel signal level of each signal channel and as a modulator for channel wavelength tagging or labeling to provide for wavelength locking the modulated sources. The power regulating function is also employed to control the channel signal power outputs of each channel to be uniform across the channel signal array. All of these functions are carried out by a feedback loop utilizing digital signal processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.