Multilevel optical signal generator and method thereof

Details Multilevel optical signal generator and method thereof Multilevel optical signal generator and method thereof

2006-04-04

2006-04-04

Harvey, Minsun Oh (Department: 2828)

Coherent light generators

Particular component circuitry

For driving or controlling laser

C372S038010

Reexamination Certificate

active

07023888

ABSTRACT:
A method and apparatus for generating multiple levels of optical signals. A plurality of electrical currents is produced. The magnitudes of the electrical currents are independent of each other. Optical signals are produced using the electrical currents. Each optical signal has an amplitude corresponding to one of the multiple levels. The amplitudes of the optical signals corresponding to a level are adjustable by independently adjusting a respective electrical current. Amplitudes of optical signals corresponding to other levels may be adjusted independently.

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L. Raddarz, e t al.; “Fiber-optic M-ary Modulation Scheme Using Multiple Light Sources”; date unknown; pp. 198-199; OFC '97 Technical Digest.

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