Polarization-Insensitive Silicon Microring Modulator for Single Sideband Modulation

We propose and experimentally demonstrate a polarization-insensitive single sideband modulator based on silicon microring modulators (MRM). The proposed modulator splits and modulates the two orthogonal polarization states of an input laser in a loopback structure, with an on-chip silicon polarizati...

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Bibliographic Details
Published inJournal of lightwave technology Vol. 40; no. 3; pp. 744 - 750
Main Authors Guan, Xun, Lyu, Mingyang, Shi, Wei, Rusch, Leslie Ann
Format Journal Article
LanguageEnglish
Published New York IEEE 01.02.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Amplitude modulation
Bandwidth
Electrooptic modulators
Frequency modulation
Mach-Zehnder interferometers
Modulation
Modulators
optical transmitters
Optical waveguides
Photodiodes
photonic integrated circuits
Polarization
Silicon
silicon photonics
Single sideband transmission
wavelength division multiplexing
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Summary:We propose and experimentally demonstrate a polarization-insensitive single sideband modulator based on silicon microring modulators (MRM). The proposed modulator splits and modulates the two orthogonal polarization states of an input laser in a loopback structure, with an on-chip silicon polarization splitter rotator (PSR), overcoming the polarization dependence of the silicon photonic modulator. The IQ configuration of the modulator enables single sideband modulation, thus improving the resistance of the modulated signal to chromatic dispersion and extending the transmission reach. The adoption of an MRM relieves the bandwidth limitation in polarization-diverse versions of SiP Mach-Zehnder modulators (MZM). Our experiments validate the proposed modulator polarization insensitivity and transmission performance.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2021.3124467