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

Double-pass microwave photonic sensing system based on low-coherence interferometry

Not Accessible

Your library or personal account may give you access

Abstract

In this Letter, we propose and experimentally demonstrate, to the best of our knowledge, a novel high-performance microwave photonic sensing system employing a reflective double-pass spectrum-slicing sensing scheme, based on low-coherence interferometry in combination with a dispersive medium. The setup is implemented by configuring a double-pass spectrum slicing sensing scheme, which significantly increases the output power level of a low-coherence optical source by approximately 12 dB to compensate for the optical loss of the system. Moreover, since the light passes through the same optical path twice, the conversion efficiency between the applied optical path difference and the dependent radiofrequency (RF) resonance shift is doubled compared to the conventional approaches. It is also possible to realize a very high resolution thanks to the broad bandwidth of the semiconductor optical amplifier (SOA) spectrum. In addition, this SOA-based scheme enables the future realization of a fully integrated sensing system. As an application example, a highly sensitive displacement sensor was investigated, and the experimental results presented a highly linear relationship between the applied OPDs and the RF frequency shifts. The proposed sensing system successfully achieved a high conversion slope of 5.56 GHz/mm and a nearly constant resolution of approximately 124 μm using a Gaussian power density spectrum.

© 2019 Optical Society of America

Full Article  |  PDF Article
More Like This
Demonstration of multiplexed sensor system combining low coherence interferometry and microwave photonics

Jesús Benítez, Mario Bolea, and José Mora
Opt. Express 25(11) 12182-12187 (2017)

Microwave–photonic low-coherence interferometry for dark zone free distributed optical fiber sensing

Xuran Zhu, Liwei Hua, Jincheng Lei, Jianan Tang, Lawrence Murdoch, and Hai Xiao
Opt. Lett. 46(5) 1173-1176 (2021)

Radio-frequency low-coherence interferometry

Carlos R. Fernández-Pousa, José Mora, Haroldo Maestre, and Pablo Corral
Opt. Lett. 39(12) 3634-3637 (2014)

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 (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