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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 29, Iss. 5 — Mar. 1, 2011
  • pp: 721–727

PDM-QPSK Modulator With a Hybrid Configuration of Silica PLCs and LiNbO$_{3}$ Phase Modulators

Hiroshi Yamazaki, Takashi Yamada, Takashi Goh, and Akimasa Kaneko

Journal of Lightwave Technology, Vol. 29, Issue 5, pp. 721-727 (2011)


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Abstract

We discuss detailed characteristics of a polarization-division-multiplexed quadrature-phase-shift-keying (PDM-QPSK) modulator with a hybrid configuration of silica planar lightwave circuits (PLCs) and LiNbO$_{3}$ (LN) phase modulators. With a polarization multiplexing circuit consisting of a half-wavelength plate (HWP) and a Mach-Zehnder-type polarization beam combiner (PBC) in a PLC, the modulator outputs a PDM-QPSK signal with a inter-polarization-channel crosstalk smaller than ${-}$40 dB. The modulator also has a small insertion loss of 5.0 dB (7.7 and 8.4 dB for each polarization), and successfully operates at 100 Gb/s.

© 2011 IEEE

Citation
Hiroshi Yamazaki, Takashi Yamada, Takashi Goh, and Akimasa Kaneko, "PDM-QPSK Modulator With a Hybrid Configuration of Silica PLCs and LiNbO$_{3}$ Phase Modulators," J. Lightwave Technol. 29, 721-727 (2011)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-29-5-721


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