Linear broadband signal generator using primary and secondary op

Details Linear broadband signal generator using primary and secondary op Linear broadband signal generator using primary and secondary op

1989-12-22

1992-06-30

Coles, Sr., Edward L.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359154, H04J 1402, H04B 1000

Patent

active

051268701

ABSTRACT:
A linear optical broadband signal generator includes primary and secondary optical modulators whose outputs are combined so as to minimize intermodulation distortion of a modulated optical signal. A constant amplitude optical signal is split differentially so as to create primary and secondary power levels, the primary and secondary power levels being inputted into the primary and secondary modulators. An electrical input to one of the modulators is differentially attenuated so as to reduce third order modulation products when modulated outputs of the modulators are combined. In addition, the total modulated optical output power is maximized by adjustment to one of the outputs of one of the modulators so that its phase is more in line with a phase of the output of the other modulator so as to maximize first order products of the combined output.

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