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Implementation of a Reference Interferometer for Nanodetection
Published on: April 26, 2014
Broadband micro-Michelson interferometer with multi-optical-path beating using a sphered-end hollow fiber
Nan-Kuang Chen1, Kuan-Yi Lu, Jow-Tsong Shy
1Department of Electro-Optical Engineering, National United University, Miaoli, Taiwan 360. nankuang@gmail.com
Optics Letters
|June 3, 2011
Summary
We developed a sensitive fiber micro-Michelson interferometer for broadband sensing. This device utilizes a novel fiber structure to generate interference signals for enhanced measurement capabilities.
Area of Science:
- Optics and Photonics
- Fiber Optic Sensors
Background:
- Fiber optic interferometers are crucial for various sensing applications.
- Existing designs face limitations in sensitivity and bandwidth.
Purpose of the Study:
- To demonstrate a high-sensitivity, broadband fiber micro-Michelson interferometer.
- To explore a novel fiber structure for enhanced optical signal generation.
Main Methods:
- Fabrication of a micro-Michelson interferometer by splicing a single-mode fiber with a sphered-end hollow-core fiber.
- Excitation of cladding modes within the hollow-core fiber due to core-cladding mode conversion.
- Interference between reflected core and cladding modes to generate beating signals.
Main Results:
- Achieved broadband operation from 1250-1650 nm.
- Demonstrated high sensitivity through the interference of core and cladding modes.
- Observed beating in interference signals resulting from distinct optical paths of cladding modes.
Conclusions:
- The developed fiber micro-Michelson interferometer offers high sensitivity and broadband operation.
- The novel fiber structure effectively converts core modes to cladding modes, enhancing interference.
- This technology holds potential for advanced optical sensing applications.
