| 摘要 |
A compact, low loss optical fiber collimator design consists of a lens, a glass wedge, and a single- or multi-fiber pigtail. The introduction of the glass wedge ensures minimum off-axis beam deflection and hence improves device reliability. By properly selecting the focusing lens, low insertion losses and long working distances in both reflection (for a multi-fiber collimator) and transmission are achieved. These collimators are critical to interferometer type devices and other micro-optical devices where uniform phase front and/or long path length are desired.
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