Optical waveguides – With optical coupler – Switch
Reexamination Certificate
2007-07-03
2007-07-03
Pak, Sung (Department: 2874)
Optical waveguides
With optical coupler
Switch
C385S022000
Reexamination Certificate
active
10918572
ABSTRACT:
A 1×N wavelength selective switch which can function as a dynamic channel equalizer when N=1. In an exemplary arrangement, the present invention is a free-space device that includes a linear array of micromachined reflective elements for beam steering of individual wavelength channels. In at least some embodiments the array of reflective elements of the present invention provides a substantially seamless design such that the optical spectrum appears flat across the transition between actuators. Various embodiments provide high channel bandwidth with flat-top channel performance, low polarization dependence loss, low vibration sensitivity, extinction ratios greater than 40 dB over all temperatures, and very low levels of electrical and optical channel cross-talk.
REFERENCES:
patent: 6721473 (2004-04-01), Islam et al.
patent: 7110635 (2006-09-01), Miller et al.
patent: 2001/0051014 (2001-12-01), Behin et al.
patent: 2005/0117837 (2005-06-01), Cerato
Godil Asif A
Nee Jocelyn
Stowe Timothy D
LightConnect, Inc.
Pak Sung
Rahll Jerry T
Ulman Morrison
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