Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

On-chip non-Hermitian optical parametric amplifiers with a large bandwidth

Abstract

Recently, our groups have introduced the notion of optical parametric amplification based on non-Hermitian phase matching wherein the incorporation of loss can lead to gain in this nonlinear optical process. Previous simulation results using second-order nonlinear optical coupled-mode theory have demonstrated the potential of this technique as an alternative to the stringent phase-matching condition, which is often difficult to achieve in semiconductor platforms. Here we fortify this notion for the case of third-order nonlinearity by considering parametric amplification in silicon nanowires and illustrate the feasibility of these devices by employing rigorous finite-difference time-domain analysis using realistic materials and geometric parameters. Particularly, we demonstrate that by systematic control of the optical loss of the idler in a four-wave mixing process, we can achieve efficient unidirectional energy conversion from the pump to the signal component even when the typical phase-matching condition is violated. Importantly, our simulations show that a signal gain of ${\sim}9\;{\rm{dB}}$ for a waveguide length of a few millimeters is possible over a large bandwidth of several hundreds of nanometers (${\sim}600\;{\rm{nm}}$). This bandwidth is nearly 2 orders of magnitude larger than what can be achieved in the conventional silicon-photonics-based four-wave mixing process.

© 2021 Optical Society of America

Full Article  |  PDF Article
More Like This
Nondissipative non-Hermitian dynamics and exceptional points in coupled optical parametric oscillators

Arkadev Roy, Saman Jahani, Qiushi Guo, Avik Dutt, Shanhui Fan, Mohammad-Ali Miri, and Alireza Marandi
Optica 8(3) 415-421 (2021)

Near-noiseless and small-footprint phase sensitive optical parametric amplifier using AlGaAs-on-insulator waveguides

Zhuang Xie, Shuaiwei Jia, Wen Shao, Xiaotian Han, Yulong Su, Jiacheng Meng, Duorui Gao, Wei Wang, and Xiaoping Xie
Appl. Opt. 62(27) 7233-7239 (2023)

Net-gain from a parametric amplifier on a chalcogenide optical chip

Michael R.E. Lamont, Barry Luther-Davies, Duk-Yong Choi, Steve Madden, Xin Gai, and Benjamin J. Eggleton
Opt. Express 16(25) 20374-20381 (2008)

Data Availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (1)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved