Optical Vernier Effect: Recent Advances and Developments

• Type: Another Publication in an International Scientific Journal
• Date: 2021

Authors

André D. Gomes (Author) Other; Hartmut Bartelt (Author) Other; Orlando Frazão (Author) FEUP

Journal

Title: Laser and Photonics Reviews

Vol. 15 No. 7

Pages: 1-16

ISSN: 1863-8880

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Other information

Authenticus ID: P-00T-ZZV

DOI: 10.1002/lpor.202000588

Abstract (EN): The optical analog of the Vernier effect applied to fiber interferometers is a recent tool to enhance the sensitivity and resolution of optical fiber sensors. This effect relies on the overlap between the signals of two interferometers with slightly detuned interference frequencies. The Vernier envelope modulation generated at the output spectrum presents magnified sensing capabilities (i.e., magnified wavelength shift) compared to that of the individual sensing interferometers that constitute the system, leading to a new generation of highly sensitive fiber sensing devices. This review analyses the recent advances and developments of the optical Vernier effect from a fiber sensing point-of-view. Initially, the fundamentals of the effect are introduced, followed by an extensive review on the state-of-the-art, presenting all the different configurations and types of fiber sensing interferometers used to introduce the optical Vernier effect. This paper also includes an overview of the complex case of enhanced Vernier effect and the introduction of harmonics to the effect.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 16