A Study of the Effect of the Position of an Edge Filter Within a Ratiometric Wavelength Measurement System

Authors

Qiang wu, Technological University DublinFollow
Pengfei Wang, Technological University DublinFollow
Yuliya Semenova, Technological University DublinFollow
Gerald Farrell, Technological University DublinFollow

Document Type

Article

Rights

Available under a Creative Commons Attribution Non-Commercial Share Alike 4.0 International Licence

Disciplines

Electrical and electronic engineering

Publication Details

Measurement Science and Technology Volume 21, Number 9. doi:10.1088/0957-0233/21/9/094013

Abstract

The effect of the position of an edge filter within a ratiometric wavelength measurement system was investigated based on three cases: (1) the reflected fibre Bragg grating (FBG) signal passes through both the reference arm and the edge filter arm, (2) the reflected FBG signal is connected directly to the edge filter arm and does not pass through the reference arm, (3) the edge filter sits in line with the FBG and thus the source power is filtered prior to reaching the FBG. Both numerical simulations and experimental results show that cases 1 and 2 have similar system performance whilst case 3 is the best arrangement which offers the highest wavelength resolution.

DOI

https://doi.org/10.1088/0957-0233/21/9/094013

Recommended Citation

Wu, Q. et al. (2010) A Study of the Effect of the Position of an Edge Filter Within a Ratiometric Wavelength System. Measurement Science and Technology, Vol. 21, no. 9. doi:10.1088/0957-0233/21/9/094013