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Novel optical quaternary minimum shift keying technology with direct modulation of conventional DFB laser and digital coherent detection

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4 Author(s)
Y. Nakanishi ; NTT Photonics Laboratories, NTT Corporation, 3-1, Morinosato Wakamiya Atsugi-shi, Kanagawa, 243-0198 Japan ; E. Yamada ; H. Tanobe ; M. Yoneyama

We propose an optical quaternary minimum shift keying technology with direct modulation for the first time. Error-free operation is obtained by using a digital coherent demodulator employing 1-bit delay detection and an adaptive FIR filter.

Published in:

IEEE Photonics Conference 2012

Date of Conference:

23-27 Sept. 2012