Compact free-space WDM device with one-sided input/output ports

Details Compact free-space WDM device with one-sided input/output ports Compact free-space WDM device with one-sided input/output ports

2007-02-01

2010-11-30

Mack, Ricky L (Department: 2873)

Optical: systems and elements

Collimating of light beam

Reexamination Certificate

active

07843644

ABSTRACT:
Techniques for designing compact free-space optical device with all input/output ports on one side are disclosed. Instead of folding a fiber, a beam folding means is provided to turn a light beam to significantly reduce the size of the device. In one embodiment, there are a first collimator, a second collimator, and a beam folding means to turn a light beam from the first collimator back to the second collimator by two turns so that a first light path from the first collimator to the beam folding means and a second light path from the second collimator to the beam folding means are parallel. A substrate is provided to which the first and second collimators and filters are boned thereto.

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patent: 2003/0198431 (2003-10-01), Chen et al.
patent: 2006/0256446 (2006-11-01), Tanaka et al.

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