Wavelength tunable laser
US11437778B2 · kind B2 · utility
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2References
5Claims
0Family size
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Key dates
| Filing date | Nov 28, 2017 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | Dec 22, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/34326
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
According to an embodiment, a wavelength tunable laser comprising a gain region and a wavelength tunable area is disclosed. The wavelength tunable area comprises: a lower clad layer; a passive optical waveguide positioned on the lower clad layer; an upper clad layer positioned on the passive optical waveguide; a drive electrode positioned on the upper clad layer; a current blocking layer positioned on the drive electrode; a heater positioned on the current blocking layer; and a first insulating groove and a second insulating groove which are positioned so as to face each other with the passive optical waveguide therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.