Method of designing collimator array device and collimator...

Details Method of designing collimator array device and collimator... Method of designing collimator array device and collimator...

2005-06-28

2005-06-28

Dang, Hung Xuan (Department: 2873)

Optical: systems and elements

Collimating of light beam

C359S820000, C385S016000, C385S033000

Reexamination Certificate

active

06912091

ABSTRACT:
According to the present invention, there is provided a method of designing a collimator array device which enables reduction of the insertion loss because of the variation of the optical length. When the beam waist is positioned at the intermediate position between the emitting side planar microlens and the receiving side planar microlens (d1=L/2), the distance d0 between the emitting side fiber array and the emitting side planar microlens can be used as the distance between the receiving side fiber array and the receiving side planar microlens, and thereby the design of the collimator array device can be simplified. The distance d0 for satisfying d1=L/2 is calculated and two values d0-2 and d0-4 are obtained. By selecting the smaller value d0-2, it is possible to reduce the insertion loss because of the shift at the time of coupling.

REFERENCES:
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patent: 5362961 (1994-11-01), Hamanaka
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patent: 5990992 (1999-11-01), Hamanaka et al.
patent: 6587618 (2003-07-01), Raguin et al.
Kawano, “Basis and Application of Optical Coupling System”, chapters 3 & 4, pp. 29-103, published by GENDAIKOGAKUSHA.

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