Method of designing collimator array device and collimator array device manufactured thereby
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United States of America Patent
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Jun 28, 2005
Grant Date -
Sep 27, 2001
app pub date -
Feb 15, 2001
filing date -
Feb 17, 2000
priority date (Note) -
Expired
status (Latency Note)
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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.
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