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Auto bias control technique for optical 16-QAM transmitter with asymmetric bias dithering

Optics Express , Volume 19 , Issue 26 . Page B308, 2013.

Hiroto Kawakami, Takayuki Kobayashi, Eiji Yoshida, and Yutaka Miyamoto.

NTT Network Innovation Laboratories, NTT Corporation, 1-1 Hikarinooka, Yokosuka Shi, Kanagawa, 239-0847 Japan.

Abstract

ABC (Auto Bias Control) technique for QAM (Quadrature Amplitude Modulation) transmitter is demonstrated. 16-QAM (10G baud) is generated and controlled using a single IQ modulator and asymmetric bias dithering technique. Measured penalty is 0.3dB.

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