Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Chinese Optics Letters

Slow light Mach-Zehnder f iber interferometer

Yundong Zhang, Jinfang Wang Jinfang Wang, Xuenan Zhang, Hao Wu, Yuanxue Cai, Jing Zhang, Ping Yuan

Published Jan 1, 2012• 2 citations
Publisher

Abstract

A slow light structure Mach-Zehnder fiber interferometer is theoretically demonstrated.The sensitivity of the interferometer is significantly enhanced by the dispersion of the slow light structure.The numerical results show that the sensitivity enhancement factor varies with the coupling coefficient and reaches its maximum under critical coupling conditions.

DOI
10.3788/col201210.021201

Related papers

Slow light Mach-Zehnder fiber interferometer

掌蕴东, 王金芳, 张学楠 +4 more

A slow light structure Mach-Zehnder fiber interferometer is theoretically demonstrated. The sensitivity of the interferometer is significantly enhanced by the dispersion of the slow light structure. The numerical results show that the sensitivity enhancement factor varies with the coupling coefficient and reaches its maximum under critical coupling conditions.

Chinese Optics Letters•Jan 1, 2012•0 citations

EIT-augmented Unbalanced Mach-Zehnder Interferometer for Enhanced Sensitivity Frequency Measurement

Ruoxi Zhu, Zifan Zhou, Jinyang Li +1 more

We investigated the use of an unbalanced Mach-Zehnder interferometer augmented with slow-light-effect induced via electromagnetically induced transparency for enhanced-sensitivity measurement of frequency shift, and demonstrated conditions corresponding to an enhancement factor greater than ten thousand.

Frontiers in Optics•Jan 1, 2023•0 citations

Spectroscopic Interferometry Using Slow-Light Media

Zhimin Shi, Robert W. Boyd, Daniel J. Gauthier

We consider a Mach-Zehnder interferometer with a slow-light medium in one of its arms. We show that the frequency/wavelength sensitivity is enhanced enormously because of the large difference in group indices between the two arms.

Frontiers in Optics•Jan 1, 2006•0 citations

Slow Light Augmented Unbalanced Interferometry for Extreme Enhancement in Sensitivity of Measuring Frequency Shift in a Laser

Ruoxi Zhu, Zifan Zhou, Jinyang Li +3 more

We demonstrate a slow-light augmented unbalanced Mach-Zehnder interferometer (MZI) which can be used to enhance very significantly the sensitivity of measuring the frequency shift in a laser. The factor of enhancement depends on the group index of the slow-light medium, the degree of imbalance between the physical lengths of the two arms of the MZI, and the spectral width of the laser. For a laser with a quantum noise limited spectral width, the group index has to be larger than the finesse of the laser cavity in order to achieve enhancement in measurement sensitivity. For the reported results, slow-light effect is produced by employing electro-magnetically induced transparency via coherent population trapping in a paraffin coated vapor cell of Rb atoms, with a maximum group index of ~2170. The maximum enhancement factor realized is ~70. This differs from the theoretically expected value of ~183 by a factor of ~2.6. This discrepancy can be attributed to effects of unidentified excess noise, and the fact that the test laser spectral width may not the quantum noise limited. Much larger values can potentially be obtained by modifying the apparatus, and using cold atoms for producing the slow-light effect. The sensitivity of any sensor that relies on measuring the frequency shift of a laser can be enhanced substantially using this technique. These include, but are not limited to, gyroscopes and accelerometers based on a conventional ring laser or a superluminal ring laser, and detectors for virialized ultra-light field dark matter.

arXiv:2403.05491•Mar 8, 2024•0 citations

High sensitivity slow light interferometer

Yundong Zhang, Cai Yuan-Xue, yang chaobo +3 more

A novel interferometer is designed based on the dispersive property of slow light media. The numerical simulation on its physical process proves that the spectral sensitivity of interferometer can be enhanced effectively using the slow light medium. And the sensitivity is proportional to the group refractive index of the slow light medium. A further investigation gives the general method of designing slow light interferometers taking into account the dispersive property of GaAs. It is theoretically demonstrated that the spectral sensitivity of an interferometer can be greatly enhanced by dispersive property of semiconductor GaAs in nearinfrared region.

High Power Laser and Particle Beams•Jul 12, 2010•0 citations

Slow Light Enhanced Accelerometry

Ruoxi Zhu, Zifan Zhou, Jason Bonacum +1 more

We show how to realize a slow-light enhanced accelerometer using a Mach-Zehnder Interferometer. A proof-of-principle experiment carried out with Rb vapor is found to produce results in close agreement with the theoretical model.

Frontiers in Optics•Jan 1, 2022•0 citations
A slow light structure Mach-Zehnder fiber interferometer is theoretically demonstrated.The sensitivity of the interferometer is significantly enhanced by the dispersion of the slow light structure.The numerical results show that the sensitivity enhancement factor varies with the coupling coefficient and reaches its maximum under critical coupling conditions.
We demonstrate a slow-light augmented unbalanced Mach-Zehnder interferometer (MZI) which can be used to enhance very significantly the sensitivity of measuring the frequency shift in a laser. The factor of enhancement depends on the group index of the slow-light medium, the degree of imbalance between the physical lengths of the two arms of the MZI, and the spectral width of the laser. For a laser with a quantum noise limited spectral width, the group index has to be larger than the finesse of the laser cavity in order to achieve enhancement in measurement sensitivity. For the reported results, slow-light effect is produced by employing electro-magnetically induced transparency via coherent population trapping in a paraffin coated vapor cell of Rb atoms, with a maximum group index of ~2170. The maximum enhancement factor realized is ~70. This differs from the theoretically expected value of ~183 by a factor of ~2.6. This discrepancy can be attributed to effects of unidentified excess noise, and the fact that the test laser spectral width may not the quantum noise limited. Much larger values can potentially be obtained by modifying the apparatus, and using cold atoms for producing the slow-light effect. The sensitivity of any sensor that relies on measuring the frequency shift of a laser can be enhanced substantially using this technique. These include, but are not limited to, gyroscopes and accelerometers based on a conventional ring laser or a superluminal ring laser, and detectors for virialized ultra-light field dark matter.
A novel interferometer is designed based on the dispersive property of slow light media. The numerical simulation on its physical process proves that the spectral sensitivity of interferometer can be enhanced effectively using the slow light medium. And the sensitivity is proportional to the group refractive index of the slow light medium. A further investigation gives the general method of designing slow light interferometers taking into account the dispersive property of GaAs. It is theoretically demonstrated that the spectral sensitivity of an interferometer can be greatly enhanced by dispersive property of semiconductor GaAs in nearinfrared region.