Title :
Coherent detection of a 50 Gb/s QPSK signal using an InP 90° hybrid monolithically integrated with balanced photodetectors
Author :
Ludwig, R. ; Matiss, A. ; Bach, H.-G. ; Molle, L. ; Leonhardt, C.C. ; Kunkel, R. ; Schmidt, D.
Author_Institution :
Fraunhofer Inst. for Telecommun., Heinrich-Hertz-Inst., Berlin, Germany
Abstract :
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.
Keywords :
III-V semiconductors; error statistics; indium compounds; monolithic integrated circuits; photodetectors; quadrature phase shift keying; waveguides; BER performance; InP 90deg hybrid; NRZ-QPSK signal; balanced photodetectors; bit rate 50 Gbit/s; coherent QPSK signal detection; error-free detection; monolithic integration; waveguide 90deg hybrid; Bit error rate; Coaxial components; Detectors; Indium phosphide; Modulation; Optical fiber polarization; Photodetectors; Quadrature phase shift keying; Signal generators; Temperature distribution;
Conference_Titel :
Optical Communication, 2009. ECOC '09. 35th European Conference on
Conference_Location :
Vienna
Print_ISBN :
978-1-4244-5096-1
