期刊
JOURNAL OF LIGHTWAVE TECHNOLOGY
卷 40, 期 6, 页码 1847-1854出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2021.3119425
关键词
Optical waveguides; Silicon; Optical amplifiers; Nonlinear optics; Optical pumping; Optical fibers; Optical fiber amplifiers; Four-wave mixing; integrated optics; nonlinear optical devices; optical amplifiers; optical signal processing
资金
- Swedish Research Council [VR-2015-00535, VR-2020-00453]
This paper reports a low-noise optical phase-sensitive amplifier (PSA) enabled by a single compact integrated silicon nitride photonic waveguide, which allows optical signal processing at different wavelengths. The experimental results show that silicon-nitride-based PSAs are promising for the next generation of broadband optical signal processing and communication systems.
Low-noise optical amplification has been a long-lasting research topic in various fields including communication, metrology and quantum optics. Here we report optical signal processing at different wavelengths enabled by a low-noise optical phase-sensitive amplifier (PSA) using a single compact integrated silicon nitride photonic waveguide. For 10 Gbit/s non-return-to-zero optical signals with central wavelengths tuned in the telecommunication band, the waveguide-based PSA exhibits a gain of more than 10 dB and a noise figure of about 1.2 dB when the coupling losses are neglected. For a bit-error-rate level of 10(-9), penalties of less than 0.8 dB for all channels are observed after the signals propagating through the chip-based PSA, which may be due to the distortions in the few-mode waveguide. These experimental results generally agree with theoretical prediction and indicate that silicon-nitride-based PSAs are promising for the next generation of broadband optical signal processing and communication systems.
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