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

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}",

year = "2019",

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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

KW - linearization techniques

KW - optical single sideband

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ER -

Linearized Single Sideband Modulation Link With High SFDR Performance

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