Self-gauged fiber-optic micro-heater with an operation temperature above 1000°C

Guigen Liu, Qiwen Sheng, Dustin Dam, Jiong Hua, Weilin Hou, Ming Han

Research output: Contribution to journalArticle

10 Scopus citations


We report a fiber-optic micro-heater based on a miniature crystalline silicon Fabry-Perot interferometer (FPI) fusion spliced to the endface of a single-mode fiber. The silicon FPI, having a diameter of 100 μm and a length of 10 or 200 μm, is heated by a 980 nm laser diode guided through the lead-in fiber, leading to a localized hot spot with a temperature that can be conveniently tuned from the ambient temperature to > 1000°C in air. In the meantime, using a white light system operating in the 1550 nm wavelength window where the silicon is transparent, the silicon FPI itself also serves as a thermometer with high resolution and high speed for convenient monitoring and precise control of the heater temperature. Due to its small size, high temperature capability, and easy operation, the micro-heater is attractive for applications in a variety of fields, such as biology, microfluidics system, mechanical engineering, and high-temperature optical sensing. As an example, the application of this micro-heater as a micro-boiler and micro-bubble generator has been demonstrated.

Original languageEnglish (US)
Pages (from-to)1412-1415
Number of pages4
JournalOptics Letters
Issue number7
StatePublished - Apr 1 2017


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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