All-fiber Mach-Zehnder interferometer based on two liquid infiltrations in a photonic crystal fiber

We propose a novel all-fiber Mach-Zehnder interferometer (MZI) fabricated by infiltrating two separated liquid sections along a PCF. Due to the reduced effective index difference between the core region and the liquid-filled cladding region, the guided field in the liquid sections possesses a larger...

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Bibliographic Details
Published inOptics express Vol. 23; no. 5; pp. 6946 - 6951
Main Authors Liou, Jia-Hong, Yu, Chin-Ping
Format Journal Article
LanguageEnglish
Published United States 09.03.2015
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Summary:We propose a novel all-fiber Mach-Zehnder interferometer (MZI) fabricated by infiltrating two separated liquid sections along a PCF. Due to the reduced effective index difference between the core region and the liquid-filled cladding region, the guided field in the liquid sections possesses a larger mode field area and can simultaneously induce the core mode and cladding modes of the empty PCF to form a MZI. The measured results demonstrate that very clear interference spectra can be obtained. By increasing the length of the MZIs, the decreased average fringe spacing can be observed. We have also measured the temperature sensitivity of our proposed PCF-based MZIs. Due to the existence of the two liquid sections, the temperature sensitivities can be enlarged to -0.176nm/°C and -0.53dB/°C.
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content type line 23
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.23.006946