A study of the effect of the position of an edge filter within a ratiometric wavelength measurement system

Qiang Wu, Pengfei Wang, Yuliya Semenova, Gerald Farrell

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)094013
JournalMeasurement Science and Technology
Volume21
Issue number9
DOIs
Publication statusPublished - 2010

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