External cavity widely tunable laser using a silicon resonator and micromechanically adjustable coupling
US8908723B2 · kind B2 · utility
4Cited by
1References
5Claims
0Family size
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Key dates
| Filing date | Jan 27, 2012 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | Jan 27, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0261
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A widely tunable laser is described where a compound semiconductor gain chip is coupled to a waveguide filter fabricated on silicon. The filter has two resonators with different free-spectral-ranges, such that Vernier tuning between the filters can be used to provide a single wavelength of light feedback into the gain chip, where the wavelength is adjustable over a wide range. The coupling between the gain chip and the filter is realized through a microlens whose position can be adjusted using micromechanics and locked in place.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.