Multichannel phase-sensitive amplification in a low-loss CMOS-compatible spiral waveguide

Zhang, Yanbing, Reimer, Christian, Wu, Jenny, Roztocki, Piotr, Wetzel, Benjamin, Little, Brent E, Chu, Sai T, Moss, David J, Eggleton, Benjamin J, Kues, Michael and Morandotti, Roberto (2017) Multichannel phase-sensitive amplification in a low-loss CMOS-compatible spiral waveguide. Optics Letters, 42 (21). pp. 4391-4394. ISSN 0146-9592

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We investigate single-channel and multichannel phase-sensitive amplification (PSA) in a highly nonlinear, CMOS-compatible spiral waveguide with ultralow linear and negligible nonlinear losses. We achieve a net gain of 10.4 dB and an extinction ratio of 24.6 dB for single-channel operation, as well as a 5 dB gain and a 15 dB extinction ratio spanning over a bandwidth of 24 nm for multiple-channel operation. In addition, we derive a simple analytic solution that enables calculating the maximum phase-sensitive gain in any Kerr medium featuring linear and nonlinear losses. These results not only give a clear guideline for designing PSA-based amplifiers but also show that it is possible to implement both optical regeneration and amplification in a single on-chip device.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Atomic, Molecular and Optical Physics Research Group
Subjects: Q Science > QC Physics
Q Science > QC Physics > QC0350 Optics. Light
Depositing User: Benjamin Wetzel
Date Deposited: 09 Nov 2017 15:33
Last Modified: 02 Jul 2019 14:15

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