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physics.optics2026
Sapphire Photonic Crystal Fiber Sensor
Mohan Wang, Tongyu Liu, Zipei Song +10
Sapphire optical fiber shows great promise for remote sensing in extreme environments approaching 2000 degC, by using laser-processing to form a single-mode waveguide within it. Ho…
physics.optics2026
Two-Step Tapering-Collapse Method Enables Element-Interdiffused Cladding for Enhanced Laser Amplification in Yb:YAG Single Crystal Fibers
Xiangfei Zhu, Xiaofei Ma, Chenxin Gao +14
The development of high-power single crystal fiber (SCF) lasers is critically hindered by the lack of a reliable cladding scheme to confine the optical mode and ensure beam quality…
physics.optics2023
High-precision optical fiber sensing beyond 1000°C
Mohan Wang, Patrick S. Salter, Frank P. Payne +10
Sapphire fiber can withstand around 2000°C, but it is multimoded, giving poor precision sensors. We demonstrate a single-mode sapphire fiber Bragg grating temperature sensor operat…