We devised and fabricated a simple polarization-switched QPSK modulator free from the 3-dB IQ-coupling loss. It consists of only three Mach-Zehnder BPSK modulators and a polarization-coupling circuit, and operated at 43 and 84 Gb/s.
© 2012 OSA
H. Yamazaki, T. Goh, T. Saida, Y. Hashizume, and S. Mino, "IQ-Coupling-Loss-Free Polarization-Switched QPSK Modulator," in Optical Fiber Communication Conference, OSA Technical Digest (Optical Society of America, 2012), paper PDP5A.8.
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