Optical wavelength converter with temperature tuning
US5546220A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1995 |
| Grant date | Aug 13, 1996 |
| Priority date | — |
| Expiry date | Feb 10, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3546
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical wavelength converter includes an optical wavelength converting element having a multimode waveguide of a core of a nonlinear optical material with a high temperature dependency or temperature coefficient of an index difference for the fundamental wave and secondary harmonic and a clad surrounding the multimode waveguide for converting a wavelength of a fundamental wave entering the multimode waveguide to a 1/2 wavelength of a secondary harmonic; and a temperature tuning device for changing a temperature of the clad and the multimode waveguide within a predetermined temperature range to maintain a phase matching temperature of the fundamental wave and the secondary harmonic in the optical wavelength converting element. The temperature tuner changes the temperature coefficient so as to select a pertinent pair of the fundamental wave and secondary harmonic modes for a wavelength conversion. The multimode waveguide structure has a large sectional area which enables output of a stable high power of secondary harmonic and is easily manufactured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.