Laser annealed optical devices made by the proton exchange proce

Details Laser annealed optical devices made by the proton exchange proce Laser annealed optical devices made by the proton exchange proce

1991-02-04

1992-06-02

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

21912165, G01J 132

Patent

active

051189232

ABSTRACT:
The present invention can be utilized for altering the optical characteristics (e.g. refractive index) of selected regions of planar and channel waveguide structures fabricated by the Proton Exchange (PE) process from materials such as LiNbO.sub.3 or LiTaO.sub.3. The present invention employs localized surface heating from the absorption of optical radiation in an annealing process. Simultaneous alteration and monitoring of the optical characteristics of optical waveguide structures in these integrated optical devices is also provided, thereby allowing closed loop or active trimming of waveguide parameters

REFERENCES:
patent: 4472456 (1984-09-01), Shah
patent: 4727237 (1988-02-01), Schantz

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