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Integrated optical 90 degrees-hybrid on LiNbO3 for phase diversity receivers
|IEE Electronics Division:|
Fourteenth European Conference on Optical Communication, ECOC 88. Vol.2. Post deadline papers : 11 - 15 September 1988
London: IEE, 1988 (IEE conference publication 292)
|European Conference on Optical Communication (ECOC) <14, 1988, Brighton>|
| Conference Paper|
|Fraunhofer HHI ()|
| integrated optics; lithium compounds; optical communication equipment; receivers; electro-optical tuning; integrated optic eight-port 90 degrees -hybrid; phase pattern; packaged unit; phase fluctuations; temperature induced phase drift; linbo3|
An integrated optic eight-port 90 degrees -hybrid has been realized on LiNbO3. The phase pattern was tuned electro-optically. The packaged unit showed the desired phase relations of 0 degrees , 90 degrees , 180 degrees and 270 degrees between the respective output ports with excellent longterm stability. The phase fluctuations are less than +or-5 degrees and the temperature induced phase drift is 15 degrees / degrees C.