"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

The effect of angular velocity-dependent Sagnac effect on speckle pattern images

HUSAMETTIN SERBETCI1,* , EGE INCE2, ISA NAVRUZ3

Affiliation

  1. Department of Electrical and Electronics Engineering, Cankiri Karatekin University, 18100 Cankiri, Turkey
  2. Graduate School of Natural and Applied Sciences, Ankara University, 06110 Ankara, Turkey
  3. Department of Electrical and Electronics Engineering, Ankara University, 06100 Ankara, Turkey

Abstract

In this study, a novel optical gyroscope design is proposed as an alternative to the conventional fiber optic gyroscope configuration. In the proposed design, a multimode optical fiber is used instead of a single-mode optical fiber. Multimode optical fibers produce a speckle pattern image at their output. It has been experimentally demonstrated that this design, which utilizes speckle pattern imaging captured by a CCD camera, can be employed to measure angular velocity. The detection of velocity is achieved through correlation analysis of the speckle pattern images observed at the output of the multimode fiber. Prior to the experimental study, the sensitivity of the speckle pattern emerging in the fiber cross-section to changes in angular velocity was simulated using the beam propagation method. Subsequently, all components of the proposed optical gyroscope system were assembled on a vibration-free optical table and tested at different angular velocities. Both simulation and experimental studies reveal that the speckle pattern images generated at the output of the multimode optical fiber can be utilized to measure changes in angular velocity..

Keywords

Sagnac effect, Speckle pattern, Angular velocity, Correlation.

Submitted at: June 4, 2025
Accepted at: Oct. 14, 2025

Citation

HUSAMETTIN SERBETCI, EGE INCE, ISA NAVRUZ, The effect of angular velocity-dependent Sagnac effect on speckle pattern images, Journal of Optoelectronics and Advanced Materials Vol. 27, Iss. 9-10, pp. 413-419 (2025)