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

High-contrast and low-power all-optical switch using Fano resonance based on a silicon nanobeam cavity

Not Accessible

Your library or personal account may give you access

Abstract

We experimentally demonstrate an ultra-compact all-optical switch involving Fano resonance based on a side-coupled Fabry–Perot (F-P) resonator and a silicon photonic crystal (PhC) nanobeam cavity, with an area of only 11μm2. By optimizing the structure of the nanobeam cavity to increase its intrinsic quality factor (Q), we achieve a sharp asymmetric transmission spectrum, with an extinction ratio (ER) as high as 40 dB and a peak loss as low as 0.6 dB. As far as we know, this is the highest measured ER in PhC-based Fano resonance. These excellent properties enable us to realize an all-optical switch with shorter switching recovery time, lower power consumption, and higher contrast, compared to that involving Lorentzian resonance. For example, under signal trains of 2.5 Gb/s, switching energy with a contrast of 3 dB for the Fano case is 113 fJ, which is 8 dB smaller than that for the Lorentzian case. Furthermore, by performing blue-detuned filtering on the 15-Gb/s output signal light, the switching contrast of the all-optical switch based on Fano resonance is significantly improved from 0.67 dB to 9.53 dB.

© 2018 Optical Society of America

Full Article  |  PDF Article
More Like This
Compact high-contrast silicon optical filter using all-passive and CROW Fano nanobeam resonators

Ziwei Cheng, Jiahui Zhang, Jianji Dong, and Yunhong Ding
Opt. Lett. 46(16) 3873-3876 (2021)

Ultralow-energy and high-contrast all-optical switch involving Fano resonance based on coupled photonic crystal nanocavities

Kengo Nozaki, Akihiko Shinya, Shinji Matsuo, Tomonari Sato, Eiichi Kuramochi, and Masaya Notomi
Opt. Express 21(10) 11877-11888 (2013)

Ultracompact optical switch using a single semisymmetric Fano nanobeam cavity

Ziwei Cheng, Jianji Dong, and Xinliang Zhang
Opt. Lett. 45(8) 2363-2366 (2020)

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 (5)

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