The Use of a Fiber Comb Filter Fabricated By a CO2 Laser Irradiation to Improve the Resolution of a Ratiometric Wavelength Measurement System

Authors

Pengfei Wang, Technological University DublinFollow
Gilberto Brambilla, University of Southampton
Ming Ding, University of Southampton
Yuliya Semenova, Technological University DublinFollow
Qiang Wu, Unviersity of SouthamptonFollow
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, Communication engineering and systems

Publication Details

Journal of Lightware Technology, Vol.30, 8, 2012, pp.1143-1149

DOI: 10.1109/JLT.2011.2171319

Abstract

An edge filter-based ratiometric wavelength measurement system is modeled and analyzed in this paper. The results confirm that the noise of input signal and photodetectors limits the resolution of the wavelength measurement system. The achievable resolution is calculated for a given noise level of the input signal and photodetectors' resolution. An improved ratiometric wavelength measurement system consisting of two fiber comb filters is presented both theoretically and experimentally, which performs coarse and fine wavelength measurements simultaneously. The resolution of the system is significantly improved to better than 5 pm while maintaining the potential for high measurement speed and wide measurable wavelength range.

DOI

https://doi.org/10.1109/JLT.2011.2171319

Recommended Citation

Wang, P., Brambilla, G., Ding, M., Semenova, Y., Wu, Q., Farrell, G. The Use of a Fiber Comb Filter Fabricated by a CO2 Laser Irradiation to Improve the Resolution of a Ratiometric Wavelength Measurement System . Journal of Lightwave Technology, Vol.30, 8, 2012, pp.1143-1149. doi:10.1109/JLT.2011.2171319