Ciena Corporation

Kim Byron Roberts

Shahab Oveis Gharan

Douglas McGhan

Yves Beaulieu

Brandon Taylor Buscaino

Aspects of the subject disclosure may include, for example, generating one or more first optical signals, launching the first optical signal into a medium, receiving from the medium one or more second optical signals, mixing the one or more second optical signals with one or more third optical signals to generate one or more mixed signals, obtaining one or more electrical signals from the mixed signal, and generating one or more point spread functions from the one or more electrical signals. Other embodiments are disclosed.

Method and apparatus for coherent spread spectrum optical spectroscopy

Aspects of the subject disclosure may include, for example, obtaining a signal received at a coherent optical receiver, and equalizing the signal using a filter system, wherein the filter system includes a first filter that provides a first filtering characteristic, a second filter that provides a second filtering characteristic, and a third filter that provides a third filtering characteristic, wherein an adjustment rate of the first filter and an adjustment rate of the second filter are each at least ten times an adjustment rate of the third filter, and wherein the adjustment rate of the first filter is at least ten times the adjustment rate of the second filter. Other embodiments are disclosed.

Method and system for fine frequency finesse filtering

Aspects of the subject disclosure may include, for example, obtaining two inputs xand xbased on a digital input signal, and causing a modulator to create two substantially orthogonal output dimensions I and Q based on the two inputs xand x, by performing controlled introduction of a correlation between the two inputs xand xfor the modulator, and detecting a resulting output power of the modulator to facilitate operation of the modulator. Other embodiments are disclosed.

In-phase (I) / quadrature (Q) correlation dither for modulator quadrature control

Aspects of the subject disclosure may include, for example, receiving, at a coherent optical receiver system, Frequency Division Multiplexed (FDM) signals within a spectrum, and equalizing the FDM signals, wherein the equalizing involves creating a plurality of sub-spectra that each corresponds to a respective one of the FDM signals, wherein two sub-spectra of the plurality of sub-spectra have overlapping frequencies, and applying a distinct equalization to each of the plurality of sub-spectra, resulting in distinct equalizations, wherein at least two of the distinct equalizations have substantially independent control. Other embodiments are disclosed.

Growing community of inventors

Ottawa, Canada

Kim Byron Roberts