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Proceedings Paper

Fiber collimator arrays for optical devices/systems
Author(s): X. Frank Zhu; Yoshiro Sato; Yasuji Sasaki; Kenjiro Hamanka
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Paper Abstract

New single-mode fiber collimator arrays (FCAs) were designed, assembled, and tested at a wavelength of 1550 nm. For FCAs using an 8-channel GRIN planar microlens array with a pitch of 250 μm and a focal length of 0.7 mm, the insertion loss was 0.5 dB with uniformity of 0.12 dB, at a collimator separation of 10 mm. The crosstalk from the other channels was less than -45 dB and the return loss of each channel was > 60 dB. For FCAs using a 6-channel lens array by fixing GRIN rod lenses into a V-groove array, the insertion loss was less than 0.5 dB at a collimator separation of 100 mm. By analyzing formulas for calculating Gaussian beam propagation for the design, some simple and useful formulas were introduced for calculating the size and position of the beam waist from those of its image, and for calculating the maximum collimator separation with efficient coupling.

Paper Details

Date Published: 4 October 2001
PDF: 8 pages
Proc. SPIE 4564, Optomechatronic Systems II, (4 October 2001); doi: 10.1117/12.444084
Show Author Affiliations
X. Frank Zhu, Nippon Sheet Glass Co., Ltd. (Japan)
Yoshiro Sato, Nippon Sheet Glass Co., Ltd. (Japan)
Yasuji Sasaki, Nippon Sheet Glass Co., Ltd. (Japan)
Kenjiro Hamanka, Nippon Sheet Glass Co., Ltd. (Japan)

Published in SPIE Proceedings Vol. 4564:
Optomechatronic Systems II
Hyungsuck Cho, Editor(s)

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