Coherent Detection of a 50 Gb/s QPSK Signal Using an InP 90deg Hybrid Monolithically Integrated with Balanced Photodetectors

Conference: ECOC 2009 - 35th European Conference on Optical Communication
09/20/2009 - 09/24/2009 at Vienna, Austria

Proceedings: ECOC 2009

Pages: 2Language: englishTyp: PDF

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Ludwig, R.; Bach, H.-G.; Molle, L.; Kunkel, R.; Schmidt, D. (Fraunhofer Institute for Telecommunications, Heinrich-Hertz-Institut, Einsteinufer 37, 10587 Berlin, Germany)
Matiss, A.; Leonhardt, C. C. (u2t Photonics AG, Reuchlinstrasse 10/11, 10553 Berlin, Germany)

Error-free detection of a single-polarization 50 Gb/s NRZ-QPSK signal using a coherent detector based on monolithic integration of a waveguide 90deg hybrid with two pairs of high-speed balanced photo-detectors is demonstrated and the BER performance is evaluated in a 480 km transmission experiment.