We demonstrate a very compact multifunctional photonic-crystal demultiplexer on high index contrast InP-membrane for coarse WDM applications. Polarization diversity is implemented using 2D-grating couplers. The performance of the device is evaluated using integrated p-i-n photodetectors. Polarization diversity from fiber to detector—without intermediate functional device—results in a minimal polarization dependent loss (PDL) of 0.2 dB. This value increases to 1.1 dB when including the photonic-crystal demultiplexer.
© 2009 IEEE
Frederik Van Laere, Tiziana Stomeo, Cyril Cambournac, Melanie Ayre, Romain Brenot, Henri Benisty, Günther Roelkens, Thomas F. Krauss, Dries Van Thourhout, and Roel Baets, "Nanophotonic Polarization Diversity Demultiplexer Chip," J. Lightwave Technol. 27, 417-425 (2009)