Linearized fiber-optic link with a high spurious free dynamic range over a wide frequency range

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

Research output: Contribution to journalArticleResearchpeer-review

Abstract

An all-optical linearized fiber-optic link is presented. It solves the problem in most reported structures where a high spurious free dynamic range (SFDR) can only be obtained in a limited frequency range. The link only involves a laser, an optical modulator, and a photodetector. The novel design in the modulator bias setting enables the third-order intermodulation distortion to be suppressed by controlling only one bias voltage of a dual-parallel Mach–Zehnder modulator (DPMZM) while the other two bias voltages are set to bias the sub-MZM and the main MZM of the DPMZM at the standard peak and null point, respectively. The link has a very simple structure and does not require any electrical component, and hence a high SFDR can be obtained over a wide frequency range. Techniques are proposed using off-the-shelf components for stabilizing the modulator bias setting to maintain high SFDR performance when the link is operated in practice. Measured results demonstrate a high SFDR of 120.5 dBHz 45 1.6 dB over a 2–20 GHz frequency range in an unamplified linearized fiber-optic link. To our knowledge, this is the first report of a linearized fiber-optic link with around 120 dBHz 45 over such a wide frequency range.

Original languageEnglish
Pages (from-to)2832-2838
Number of pages7
JournalApplied Optics
Volume58
Issue number11
DOIs
Publication statusPublished - 10 Apr 2019

Fingerprint

Modulators
Fiber optics
dynamic range
fiber optics
frequency ranges
modulators
Bias voltage
Intermodulation distortion
Light modulators
Photodetectors
Optical fibers
intermodulation
electric potential
shelves
photometers
Lasers
optical fibers
lasers

Cite this

Zheng, Ruiqi ; Chan, Erwin H.W. ; Wang, Xudong ; Feng, Xinhuan ; Guan, Bai Ou. / Linearized fiber-optic link with a high spurious free dynamic range over a wide frequency range. In: Applied Optics. 2019 ; Vol. 58, No. 11. pp. 2832-2838.
@article{14f14f912524428ea1d360d1c0e10196,
title = "Linearized fiber-optic link with a high spurious free dynamic range over a wide frequency range",
abstract = "An all-optical linearized fiber-optic link is presented. It solves the problem in most reported structures where a high spurious free dynamic range (SFDR) can only be obtained in a limited frequency range. The link only involves a laser, an optical modulator, and a photodetector. The novel design in the modulator bias setting enables the third-order intermodulation distortion to be suppressed by controlling only one bias voltage of a dual-parallel Mach–Zehnder modulator (DPMZM) while the other two bias voltages are set to bias the sub-MZM and the main MZM of the DPMZM at the standard peak and null point, respectively. The link has a very simple structure and does not require any electrical component, and hence a high SFDR can be obtained over a wide frequency range. Techniques are proposed using off-the-shelf components for stabilizing the modulator bias setting to maintain high SFDR performance when the link is operated in practice. Measured results demonstrate a high SFDR of 120.5 dBHz 4 ∕ 5 1.6 dB over a 2–20 GHz frequency range in an unamplified linearized fiber-optic link. To our knowledge, this is the first report of a linearized fiber-optic link with around 120 dBHz 4 ∕ 5 over such a wide frequency range.",
author = "Ruiqi Zheng and Chan, {Erwin H.W.} and Xudong Wang and Xinhuan Feng and Guan, {Bai Ou}",
year = "2019",
month = "4",
day = "10",
doi = "10.1364/AO.58.002832",
language = "English",
volume = "58",
pages = "2832--2838",
journal = "Applied Optics",
issn = "1559-128X",
publisher = "Optical Society of America (OSA)",
number = "11",

}

Linearized fiber-optic link with a high spurious free dynamic range over a wide frequency range. / Zheng, Ruiqi; Chan, Erwin H.W.; Wang, Xudong; Feng, Xinhuan; Guan, Bai Ou.

In: Applied Optics, Vol. 58, No. 11, 10.04.2019, p. 2832-2838.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Linearized fiber-optic link with a high spurious free dynamic range over a wide frequency range

AU - Zheng, Ruiqi

AU - Chan, Erwin H.W.

AU - Wang, Xudong

AU - Feng, Xinhuan

AU - Guan, Bai Ou

PY - 2019/4/10

Y1 - 2019/4/10

N2 - An all-optical linearized fiber-optic link is presented. It solves the problem in most reported structures where a high spurious free dynamic range (SFDR) can only be obtained in a limited frequency range. The link only involves a laser, an optical modulator, and a photodetector. The novel design in the modulator bias setting enables the third-order intermodulation distortion to be suppressed by controlling only one bias voltage of a dual-parallel Mach–Zehnder modulator (DPMZM) while the other two bias voltages are set to bias the sub-MZM and the main MZM of the DPMZM at the standard peak and null point, respectively. The link has a very simple structure and does not require any electrical component, and hence a high SFDR can be obtained over a wide frequency range. Techniques are proposed using off-the-shelf components for stabilizing the modulator bias setting to maintain high SFDR performance when the link is operated in practice. Measured results demonstrate a high SFDR of 120.5 dBHz 4 ∕ 5 1.6 dB over a 2–20 GHz frequency range in an unamplified linearized fiber-optic link. To our knowledge, this is the first report of a linearized fiber-optic link with around 120 dBHz 4 ∕ 5 over such a wide frequency range.

AB - An all-optical linearized fiber-optic link is presented. It solves the problem in most reported structures where a high spurious free dynamic range (SFDR) can only be obtained in a limited frequency range. The link only involves a laser, an optical modulator, and a photodetector. The novel design in the modulator bias setting enables the third-order intermodulation distortion to be suppressed by controlling only one bias voltage of a dual-parallel Mach–Zehnder modulator (DPMZM) while the other two bias voltages are set to bias the sub-MZM and the main MZM of the DPMZM at the standard peak and null point, respectively. The link has a very simple structure and does not require any electrical component, and hence a high SFDR can be obtained over a wide frequency range. Techniques are proposed using off-the-shelf components for stabilizing the modulator bias setting to maintain high SFDR performance when the link is operated in practice. Measured results demonstrate a high SFDR of 120.5 dBHz 4 ∕ 5 1.6 dB over a 2–20 GHz frequency range in an unamplified linearized fiber-optic link. To our knowledge, this is the first report of a linearized fiber-optic link with around 120 dBHz 4 ∕ 5 over such a wide frequency range.

UR - http://www.scopus.com/inward/record.url?scp=85064155824&partnerID=8YFLogxK

U2 - 10.1364/AO.58.002832

DO - 10.1364/AO.58.002832

M3 - Article

VL - 58

SP - 2832

EP - 2838

JO - Applied Optics

JF - Applied Optics

SN - 1559-128X

IS - 11

ER -