Journal
OPTICS LETTERS
Volume 44, Issue 7, Pages 1876-1879Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.44.001876
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Funding
- National Key R&D Program of China [2017YFA0303700]
- George Daniels Educational Trust
- Royal Academy of Engineering
- National Natural Science Foundation of China (NSFC) [61505183, 61535005]
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Taking advantage of the high thermal conductivity of graphene, this Letter demonstrates a microelectromechanical (MEM) tunable Fabry-Perot (F-P) cavity, based on a graphene-bonded fiber device (GFD), which acts as a microheater. By increasing the electric current from 0 to 8 mA in the heater, the temperature of the GFD can rise and approach a value of 760 K theoretically. This high temperature will cause a deformation of the fiber, allowing the graphene-bonded fiber end to form a gap-adjustable F-P cavity with a cleaved single-mode fiber. The gap in the cavity can be reduced by increasing the current applied, leading the transmittance of the cavity to change. In this work, a highly sensitive current sensor (5.9 x 10(5) nin/A(2) ) and a tunable mode-locked fiber laser (1.2 x 10(4) nm/A(2) ) are created based on the MEM tunable F-P cavity. (C) 2019 Optical Society of America
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