Optical transmitter
US7103239B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2005 |
| Grant date | Sep 5, 2006 |
| Priority date | — |
| Expiry date | Aug 17, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/50
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical transmitter comprises a monolithic transmitter photonic integrated circuit (TxPIC) chip that includes an array of modulated sources formed on the PIC chip and having different operating wavelengths approximating a standardized wavelength grid and providing signal outputs of different wavelengths. A wavelength selective combiner is formed on the PIC chip having a wavelength grid passband response approximating the wavelength grid of the standardized wavelength grid. The signal outputs of the modulated sources optically coupled to inputs of the wavelength selective combiner to produce a combined signal output from the combiner. A first wavelength tuning element coupled to each of the modulated sources and a second wavelength tuning element coupled to the wavelength selective combiner. A wavelength monitoring unit is coupled to the wavelength selective combiner to sample the combined signal output. A wavelength control system coupled to the first and second wavelength tuning elements and to said wavelength monitoring unit to receive the sampled combined signal output. The wavelength control system adjusts the respective wavelengths of operation of the modulated sources to a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.