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Optical isolation by orthogonal polarization

: Helmolt, C.H. von

Institute of Electrical and Electronics Engineers -IEEE-; Institution of Electrical Engineers -IEE-, London:
ECOC 87. 13th European Conference on Optical Communication. Technical Digest. Vol.1 : Helsinki, Finland, 13-17 Sept 1987
Helsinki, 1987
European Conference on Optical Communication (ECOC) <13, 1987, Helsinki>
Fraunhofer HHI ()
integrated optics; light polarisation; optical communication equipment; optical waveguides; semiconductor junction lasers; optical isolation; orthogonal polarization; quarter wave plate principle; local oscillator laser; integrated optical heterodyne receiver; laser diode butt; linbo3

Generalizing the quarter wave plate principle, for example, the local oscillator laser of an integrated optical heterodyne receiver can be isolated. Isolation of approximately 20 dB is experimentally obtained for a laser diode butt coupled to a Ti:LiNbO3 waveguide.