Nearly Autofocusing Cavity For Fiberoptic Sensor Probes

A. G. Mignani; M. Brenci; G. Conforti; A. Mencaglia

doi:10.1117/12.949420

5 April 1989 Nearly Autofocusing Cavity For Fiberoptic Sensor Probes

A. G. Mignani, M. Brenci, G. Conforti, A. Mencaglia

Proceedings Volume 1014, Micro-Optics; (1989) https://doi.org/10.1117/12.949420
Event: 1988 International Congress on Optical Science and Engineering, 1988, Hamburg, Germany

Abstract

An original probe design for multimode optical fiber sensors, making use of a transducer, is presented. The probe is constituted by two facing quarter pitch graded-index (GRIN) microlenses which confine the transducer: the first GRIN is fixed to the fiber, while the other has a reflecting end face. The resultant micro-optical system works as a "nearly autofocusing cavity", which improves the coupling between the fiber and the transducer and shows a relatively low insertion loss.

Citation Download Citation

A. G. Mignani, M. Brenci, G. Conforti, and A. Mencaglia "Nearly Autofocusing Cavity For Fiberoptic Sensor Probes", Proc. SPIE 1014, Micro-Optics, (5 April 1989); https://doi.org/10.1117/12.949420

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