Nonlinearity compensation of laser diode and other semiconductor

Details Nonlinearity compensation of laser diode and other semiconductor Nonlinearity compensation of laser diode and other semiconductor

1997-02-12

1999-12-14

Bovernick, Rodney

Coherent light generators

Particular component circuitry

Optical pumping

H01S 300

Patent

active

060026987

ABSTRACT:
A high-linearity light source comprising a first semiconductor diode (e.g., a light-source diode such as a laser diode or a light-emitting diode, or a light-receiving diode such as a photodetector) and a nonlinearity compensation network with a second, compensation, semiconductor diode is provided. The first and second diodes are connected in an antiparallel configuration with either an A.C. signal source (for light emission) or a load (for light receiving) and in separated D.C. bias paths.
By varying the relative biasing of the diodes (e.g., using a variable resistor in series with a diode), the capacitance of the combination of diodes cancels, and the linearity of the system improves. With a properly biased compensation diode the even-order nonlinearity distortion can be cancelled completely.

REFERENCES:
patent: 4032802 (1977-06-01), Pan et al.
patent: 5077619 (1991-12-01), Toms
patent: 5418806 (1995-05-01), Araki
patent: 5436749 (1995-07-01), Pidgeon, Jr. et al.
patent: 5448629 (1995-09-01), Bosch et al.

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