Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Reexamination Certificate
2005-09-06
2005-09-06
Pascal, Leslie (Department: 2633)
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
C359S199200, C359S199200, C359S199200, C359S199200
Reexamination Certificate
active
06940624
ABSTRACT:
In a wavelength division multiplexed system, optical frequencies are assigned in accordance with a channel plan conforming to an International Telecommunications Union (ITU) grid whereby every third channel position in the grid is vacant. As a result, both four wave mixing (FWM) and cross phase modulation (XPM) are reduced using ITU standard frequencies. In addition, a low bandwidth expansion factor (BEF) can be achieved.
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CIENA Corporation
Pascal Leslie
Sedighian M. R.
Soltz David L.
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