Optimization of multicore fiber for high-temperature sensing

Amy Van Newkirk, Enrique Antonio-Lopez, Guillermo Salceda-Delgado, Rodrigo Amezcua-Correa, Axel Schülzgen

Research output: Contribution to journalArticlepeer-review

66 Scopus citations


We demonstrate a novel high-temperature sensor using multicore fiber (MCF) spliced between two single-mode fibers. Launching light into such fiber chains creates a supermode interference pattern in the MCF that translates into a periodic modulation in the transmission spectrum. The spectrum shifts with changes in temperature and can be easily monitored in real time. This device is simple to fabricate and has been experimentally shown to operate at temperatures up to 1000°C in a very stable manner. Through simulation, we have optimized the multicore fiber design for sharp spectral features and high overall transmission in the optical communications window. Comparison between the experiment and the simulation has also allowed determination of the thermo-optic coefficient of the MCF as a function of temperature.

Original languageEnglish (US)
Pages (from-to)4812-4815
Number of pages4
JournalOptics Letters
Issue number16
StatePublished - 2014

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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