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Wavelength tunable fiber lens based on multimode interference

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3 Author(s)
W. S. Mohammed ; CREOL/Sch. of Opt., Univ. of Central Florida, Orlando, FL, USA ; A. Mehta ; E. G. Johnson

A new concept for a fiber-based wavelength-tunable condensing lens is theoretically and experimentally investigated in terms of its ability to shift the longitudinal focus position as a function of wavelength. By exploiting multimode interference effects with reimaging theory, a compact and robust device, completely contained within a standard FC connector, can be constructed by simply splicing a single-mode fiber (SMF) to a finite length section of multimode fiber (MMF). This paper summarizes the theoretical and experimental results of such a device, with additional results for wavelength sensitivity.

Published in:

Journal of Lightwave Technology  (Volume:22 ,  Issue: 2 )