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

High-resolution on-chip Fourier transform spectrometer based on cascaded optical switches

Not Accessible

Your library or personal account may give you access

Abstract

Chip-level spectrometers provide a stable and cost-effective solution for spectral analysis in various applications. Here we present a silicon on-chip digital Fourier transform spectrometer consisting of eight cascaded optical switches connected by delay waveguides. By configuring the states of the optical switches, this chip can realize 127 Mach–Zehnder interferometers with linearly increased optical path differences. A machine-learning regularization method is utilized to reconstruct the spectrum. Experimental results show that our chip can retrieve both sparse and broadband optical spectra with negligible reconstruction errors. The spectral resolution can be further improved by cascading more stages of optical switches. Our method has the advantages of compact size, high scalability, and high signal-to-noise ratio, making it a promising candidate for realizing miniaturized spectrometers.

© 2022 Optical Society of America

Full Article  |  PDF Article
More Like This
On-chip Fourier transform spectrometers by dual-polarized detection

Huijie Wang, Zhongjin Lin, Qifeng Li, and Wei Shi
Opt. Lett. 44(11) 2923-2926 (2019)

Demonstration of a compressive-sensing Fourier-transform on-chip spectrometer

Hugh Podmore, Alan Scott, Pavel Cheben, Aitor V. Velasco, Jens H. Schmid, Martin Vachon, and Regina Lee
Opt. Lett. 42(7) 1440-1443 (2017)

On-chip polarization-insensitive Fourier transform spectrometer

Huijie Wang, Qifeng Li, and Wei Shi
Opt. Lett. 45(6) 1479-1482 (2020)

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 (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 (5)

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