Tunable optical source for producing a coherent optical beam with a wide range of wavelength tuning
US5388106A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 25, 1994 |
| Grant date | Feb 7, 1995 |
| Priority date | — |
| Expiry date | Apr 25, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/2275
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A tunable laser diode comprises a first reflector, a second reflector, an optical cavity extending between the first reflector and the second reflector for establishing an optical resonance by transmitting an optical beam therethrough, and a gain region for amplifying the optical beam. The optical cavity comprises a first waveguide part connected to the first reflector and extending toward the second reflector, a second waveguide part connected to the second reflector and extending toward the first reflector, a third waveguide part connecting the first waveguide part and the second waveguide part with each other for passing a first optical beam between the first and second reflectors, and a fourth waveguide part connecting the first waveguide part and the second waveguide part for passing a second optical beam between the first and second reflectors, wherein the first waveguide part, the second waveguide part and the third waveguide part form a first optical path having a first optical path length while the first waveguide part, the second waveguide part and the fourth waveguide part form a second optical path having a second optical path length that is different from said first op…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.