A novel 2-bit Photonic Digital-to-Analog Converter based on Quadrature Phase Modulation and Differential Demodulation

Jinxin Liao; He Wen; Xiaoping Zheng; Bingkun Zhou

doi:10.1364/ACP.2011.830906

Optical Transmission Systems, Subsystems, and Technologies
Proceedings of SPIE (Optica Publishing Group, 2011),
paper 830906
•https://doi.org/10.1364/ACP.2011.830906

A novel 2-bit Photonic Digital-to-Analog Converter based on Quadrature Phase Modulation and Differential Demodulation

Jinxin Liao, He Wen, Xiaoping Zheng, and Bingkun Zhou

Asia Communications and Photonics Conference and Exhibition 2011

Shanghai China
13–16 November 2011
ISBN: 978-0-8194-8957-9

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J. Liao, H. Wen, X. Zheng, and B. Zhou, "A novel 2-bit Photonic Digital-to-Analog Converter based on Quadrature Phase Modulation and Differential Demodulation," in Optical Transmission Systems, Subsystems, and Technologies, X. Liu, E. Ciaramella, N. Wada, and N. Chi, eds., Vol. 8309 of Proceedings of SPIE (Optica Publishing Group, 2011), paper 830906.

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Abstract

A novel 2-bit PDAC based on quadrature phase modulation and differential demodulation together with balanced detection is proposed and experimentally demonstrated at sampling rates of 2.5GS/s and 10GS/s. The simulation results of expanded 4-bit PDAC from the 2-bit PDAC unit by using two channels of incoherent light with different wavelength are presented. This PDAC scheme is simple, compact and effective with high expansibility. Compared with other approaches, this method’s output signal has a greater dynamic range and a higher noise margin.

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