Linearized Single Sideband Modulation Link With High SFDR Performance

Ruiqi Zheng; Erwin H.W. Chan; Xudong Wang; Xinhuan Feng; Bai Ou Guan

doi:10.1109/LPT.2019.2892653

Linearized Single Sideband Modulation Link With High SFDR Performance

Ruiqi Zheng, Erwin H.W. Chan, Xudong Wang, Xinhuan Feng, Bai Ou Guan

CDU College of Engineering, IT and Environment

Research output: Contribution to journal › Article › peer-review

Abstract

A linearized fiber optic link without dispersion induced power fading is presented. It is based on using a dual-drive dual-polarization modulator to generate a single sideband (SSB) RF modulated optical signal and an orthogonally linear polarized unmodulated optical signal. The link is linearized and consequently the third-order spurious-free dynamic range (SFDR3) is largely increased by designing the angle of a linear polarizer connected to the modulator output to suppress the third-order intermodulation distortion. The two Mach Zehnder modulators inside the dual-polarization modulator are biased at the quadrature point. Hence, there is no degradation in the link second-order spurious-free dynamic range (SFDR2) performance compared with the conventional quadrature-biased Mach Zehnder modulator link. Experimental results demonstrate an SSB modulation link without dispersion induced power fading and a record measured SFDR3 of 121.4 dB·Hz ^4/5

Original language	English
Article number	8611093
Pages (from-to)	299-302
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	31
Issue number	4
DOIs	https://doi.org/10.1109/LPT.2019.2892653
Publication status	Published - 15 Feb 2019

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title = "Linearized Single Sideband Modulation Link With High SFDR Performance",

abstract = " A linearized fiber optic link without dispersion induced power fading is presented. It is based on using a dual-drive dual-polarization modulator to generate a single sideband (SSB) RF modulated optical signal and an orthogonally linear polarized unmodulated optical signal. The link is linearized and consequently the third-order spurious-free dynamic range (SFDR3) is largely increased by designing the angle of a linear polarizer connected to the modulator output to suppress the third-order intermodulation distortion. The two Mach Zehnder modulators inside the dual-polarization modulator are biased at the quadrature point. Hence, there is no degradation in the link second-order spurious-free dynamic range (SFDR2) performance compared with the conventional quadrature-biased Mach Zehnder modulator link. Experimental results demonstrate an SSB modulation link without dispersion induced power fading and a record measured SFDR3 of 121.4 dB·Hz 4/5 ",

keywords = "Analog optical links, dynamic range, intermodulation distortion, linearization techniques, optical single sideband",

author = "Ruiqi Zheng and Chan, {Erwin H.W.} and Xudong Wang and Xinhuan Feng and Guan, {Bai Ou}",

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T1 - Linearized Single Sideband Modulation Link With High SFDR Performance

AU - Zheng, Ruiqi

AU - Chan, Erwin H.W.

AU - Wang, Xudong

AU - Feng, Xinhuan

AU - Guan, Bai Ou

PY - 2019/2/15

Y1 - 2019/2/15

N2 - A linearized fiber optic link without dispersion induced power fading is presented. It is based on using a dual-drive dual-polarization modulator to generate a single sideband (SSB) RF modulated optical signal and an orthogonally linear polarized unmodulated optical signal. The link is linearized and consequently the third-order spurious-free dynamic range (SFDR3) is largely increased by designing the angle of a linear polarizer connected to the modulator output to suppress the third-order intermodulation distortion. The two Mach Zehnder modulators inside the dual-polarization modulator are biased at the quadrature point. Hence, there is no degradation in the link second-order spurious-free dynamic range (SFDR2) performance compared with the conventional quadrature-biased Mach Zehnder modulator link. Experimental results demonstrate an SSB modulation link without dispersion induced power fading and a record measured SFDR3 of 121.4 dB·Hz 4/5

AB - A linearized fiber optic link without dispersion induced power fading is presented. It is based on using a dual-drive dual-polarization modulator to generate a single sideband (SSB) RF modulated optical signal and an orthogonally linear polarized unmodulated optical signal. The link is linearized and consequently the third-order spurious-free dynamic range (SFDR3) is largely increased by designing the angle of a linear polarizer connected to the modulator output to suppress the third-order intermodulation distortion. The two Mach Zehnder modulators inside the dual-polarization modulator are biased at the quadrature point. Hence, there is no degradation in the link second-order spurious-free dynamic range (SFDR2) performance compared with the conventional quadrature-biased Mach Zehnder modulator link. Experimental results demonstrate an SSB modulation link without dispersion induced power fading and a record measured SFDR3 of 121.4 dB·Hz 4/5

KW - Analog optical links

KW - dynamic range

KW - intermodulation distortion

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KW - optical single sideband

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Linearized Single Sideband Modulation Link With High SFDR Performance

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