Tunable laser and tunable laser module
US9722397B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2015 |
| Grant date | Aug 1, 2017 |
| Priority date | — |
| Expiry date | Nov 16, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/34306
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A tunable laser includes: a wavelength filter that includes a first ring resonator and a second ring resonator each of which is formed by a waveguide including a silicon waveguide core, and each of which is capable of shifting each of resonance wavelengths that exit periodically and whose intervals are different from each other; and an integrated device that is optically coupled to the wavelength filter, and in which a first semiconductor optical amplifier and a reflector are provided in sequence from a side of the wavelength filter, wherein the resonance wavelengths of the first ring resonator and the second ring resonator are overlapped with each other at one wavelength, and the resonance wavelengths are overlapped with each other also at a plurality of wavelengths other than the one wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.