Asymmetric optical waveguide grating resonators and DBR lasers
US10109981B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2013 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Dec 27, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/22
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Monolithic asymmetric optical waveguide grating resonators including an asymmetric resonant grating are disposed in a waveguide. A first grating strength is provided along a first grating length, and a second grating strength, higher than the first grating strength, is provided along a second grating length. In advantageous embodiments, the effective refractive index along first grating length is substantially matched to the effective refractive index along second grating length through proper design of waveguide and grating parameters. A well-matched effective index of refraction may permit the resonant grating to operate in a highly asymmetric single longitudinal mode (SLM). In further embodiments, an asymmetric monolithic DFB laser diode includes front and back grating sections having waveguide and grating parameters for highly asymmetric operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.