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Analysis of optical crosstalk within optoelectronic integrated circuits including lasers and photodetectors

: Heidrich, H.; Kaiser, R.; Albrecht, P.; Fidorra, S.; Hamacher, M.; Rehbein, W.

Applied Physics. B 73 (2001), Nr.5-6, S.581-583
ISSN: 0340-3793
ISSN: 0721-7269
ISSN: 0946-2171
ISSN: 1432-0649
European Conference on Integrated Optics (ECIO) <10, 2001, Paderborn>
Konferenzbeitrag, Zeitschriftenaufsatz
Fraunhofer HHI ()
iii-v semiconductors; indium compounds; integrated optoelectronics; optical crosstalk; optical receivers; optical transmitters; photodetectors; photodiodes; semiconductor lasers; transceivers; optoelectronic integrated circuits; lasers; y-junction transceiver oeics; optical crosstalk suppression; accumulated light; oeic substrate; integrated laser; stray light; laser/waveguide butt joint interface; optical intra-chip crosstalk; small die dimensions; 1.3 micron; 1.55 micron; inp

Optical crosstalk from a 1.3 mu m laser to a 1.55 mu m photodiode on a single InP substrate, and its suppression within 1.3 mu m/1.5 mu m Y-junction transceiver OEICs, has been analyzed experimentally. The results indicate that the optical crosstalk suppression is limited by the accumulated light in the OEIC substrate coming mainly from the spontaneous emission of the integrated laser and from stray light at the laser waveguide butt joint interface. For OEICs, integrating lasers and photodetectors, the achievable optical intra-chip crosstalk at present will be in the range of 30-40 dB at the required small die dimensions.