An all-fiber beam shaping using multimode fiber

Mona Mayeh; Faramarz Farahi

doi:10.1117/12.866380

8 September 2010 An all-fiber beam shaping using multimode fiber

Mona Mayeh, Faramarz Farahi

Proceedings Volume 7653, Fourth European Workshop on Optical Fibre Sensors; 76532O (2010) https://doi.org/10.1117/12.866380
Event: (EWOFS'10) Fourth European Workshop on Optical Fibre Sensors, 2010, Porto, Portugal

Abstract

A new beam shaping technique has been developed by inverse etching the end face of a multimode fiber to form a concave cone tip. Concave tip fiber can convert a Gaussian beam profile to a flat top beam with a uniform intensity distribution. A flat top beam with intensity variation of approximately 5% and flat top diameter to spot diameter ratio of 67% has been achieved. With this technique one can also change the beam shape from a Gaussian to a donut by moving the observation plane. A flat top multimode fiber beam delivery has been tested for stimulation of prostate nerves.

Citation Download Citation

Mona Mayeh and Faramarz Farahi "An all-fiber beam shaping using multimode fiber", Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 76532O (8 September 2010); https://doi.org/10.1117/12.866380

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