An Octave-Spanning Optical Parametric Amplifier Based On A Low-Dispersion Silicon-Rich Nitride Waveguide

Keywords

Dual pump; octave spanning; optical parametric amplifiers; phase sensitive; silicon-rich nitride

Abstract

Optical amplification is one of the main applications of nonlinear optics, and broadband optical parametric amplifiers are useful not only for multiple data channels in a communication system but for ultrashort optical pulses in ultrafast optics as well. We propose an octave-spanning parametric amplifier in a dual-pump scheme, enabled by advanced dispersion flattening and strong Kerr nonlinearity in a silicon-rich nitride waveguide. A comprehensive nonlinear model is used to study cascaded (non)degenerate parametric processes, by taking wavelength-dependent nonlinearity and all-order dispersion into account. The obtained gain spectrum has a 3-dB bandwidth of one octave from 126 to 244 THz (i.e., 1151 nm), and the gain reaches 11 dB. We show that the proposed amplifier is in principle tolerant to variations of physical parameters, such as pump power, propagation loss, and dispersion. We also examine the amplification of an ultrafast 13-fs soliton pulse with a sech2 waveform. The gain can reach 8 dB, with the pulse shape well maintained.

Publication Date

11-1-2018

Publication Title

IEEE Journal of Selected Topics in Quantum Electronics

Volume

24

Issue

6

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/JSTQE.2018.2836992

Socpus ID

85047005224 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85047005224

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