Abstract

Multimode optical fiber-graded index (GRIN) lens couples are modeled with the use of an algorithm which quantitatively traces light paths through the optical elements. The effects of the variation of optical fiber core size, GRIN lens length (pitch), fiber-optic/GRIN lens separation, and wavelength are quantitatively demonstrated, Chromatic effects specific to Selfoc™ GRIN lens couples are evaluated for the near-UV to near-infrared spectral region. In general, GRIN lens couples are found to be superior to equivalent ball lens couples for spectroscopic applications. A simple example application of the multimode fiber-optic/GRIN lens couple in remote chemical spectroscopy is presented.

Coupling efficiency evaluation of multimode fiber devices using GRIN rod lenses

Paola Accordi, Carlo P. Basola, Giam Paolo Bava, Guido Chiaretti, and Ivo Montrosset
Appl. Opt. 29(1) 37-46 (1990)

Characteristic analysis of laser diode to multimode fiber coupling using a plano-convex GRIN lens

Toyokazu Sakamoto
Appl. Opt. 26(15) 2947-2951 (1987)

MEMS compatible micro-GRIN lenses for fiber to chip coupling of light

Michael Zickar, Wilfried Noell, Cornel Marxer, and Nico de Rooij
Opt. Express 14(10) 4237-4249 (2006)

Coupling loss analysis on a multimode fiber directional coupler using GRIN-rod lenses

Toyokazu Sakamoto
Appl. Opt. 25(15) 2620-2625 (1986)

Optical properties of GRIN fiber lens arrays: dependence on fiber length

William Lama
Appl. Opt. 21(15) 2739-2746 (1982)