title: Simultaneous detection of 10-Gbit/s QPSK × 2-ch. Fourier-encoded synchronous OCDM signals with digital coherent receiver.
abstract: We experimentally demonstrate the simultaneous detection of 10-Gbit/s quadrature phase shift keying (QPSK) × 2-channel Fourier-encoded synchronous optical code division multiplexing (FE-SOCDM) signals using a digital coherent receiver, for the first time. First, we analytically verify that simultaneous detection can be achieved with an N-point discrete Fourier transform (DFT) using digital signal processing (DSP) because the N-channel Fourier encoding corresponds to an N × N inverse DFT, then the operation is experimentally confirmed. Simultaneous detection of 10-Gbit/s QPSK × 2-channel FE-SOCDM signals is evaluated. The proposed scheme dramatically expands the capability of OCDM systems.
authors.affiliation: University of Yamanashi, 4-3-11, Takeda, Kofu, Yamanashi 400-8511, Japan.
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Okamura
authors.forename: Osamu
authors.initials: O
authors.lastname: Iijima
authors.forename: Satoshi
authors.initials: S
authors.lastname: Shimizu
authors.forename: Naoya
authors.initials: N
authors.lastname: Wada
authors.forename: Masanori
authors.initials: M
authors.lastname: Hanawa
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D005583:Fourier Analysis; D016247:Information Storage and Retrieval / Q000379:methods*; D055096:Optical Devices; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*