Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2005-05-31
2005-05-31
Chowdhury, Tarifur R. (Department: 2871)
Optical waveguides
With optical coupler
Input/output coupler
C385S122000, C398S084000, C398S087000
Reexamination Certificate
active
06901188
ABSTRACT:
A device used for dispersion compensation of a plurality of optical signals passing through an optical transmission line. The device includes a photosensitive optical fiber including a long length, chirped Bragg grating providing dispersion compensation over a wide bandwidth of optical signals. The long length chirped Bragg grating has a reflection bandwidth greater than about 25 nm, and further has reduced distortion at a bit rate of about 10−9. This reduced distortion leads to a power penalty of less than 3 dB during less than 25 nm stepwise changes in wavelength of the plurality of optical signals across the wide bandwidth. The device provides a dispersion greater than about 100 ps
m in a optical transmission line operating at 10 Gbit/s.
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3M Innovative Properties Company
Caley Michael H
Chowdhury Tarifur R.
Rosenblatt Gregg B.
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