In this paper, a fiber coupling method is presented to analyze the fiber-optic ¨elocity interferometric system for any reflector ( ) optic VISAR , and the system has been de¨eloped. Optic VISAR is applied to measure the ¨elocity profile of a diffusely reflecting surface; the experimental results fit
Low cost disposable reflective optical fiber microphone
✍ Scribed by An Sun; Yuliya Semenova; Gerald Farrell
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 892 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
A simple and disposable optical fiber microphone technology is proposed. Low cost alumni foil is used as an elastic reflective membrane and two multimode fibers are employed as sensing fibers for the transmission and reception of sensing light. Experiments are carried on to test the performance of optical fiber microphone and the results show that it can be used to detect sound signals within the frequency response range up to 20 KHz. V
📜 SIMILAR VOLUMES
Two pairs of fiber-optic links are designed, built, and tested using directly modulated semiconductor laser diodes operating at a 1.3 m wa¨elength. Delays of 5 s are demonstrated, with a spurious free dynamic range of up to 115 dB r Hz 2 r 3 , a wide-frequency bandwidth of up to 6 GHz, and a pulse r