Semiconductor Mach-Zehnder modulator

Details Semiconductor Mach-Zehnder modulator Semiconductor Mach-Zehnder modulator

1998-05-28

2000-09-19

Spyrou, Cassandra

Optical waveguides

Temporal optical modulation within an optical waveguide

Electro-optic

385 3, 385 4, 385 8, 385 9, 359237, 359248, G02F 1035, G02F 1295

Patent

active

061224146

ABSTRACT:
A semiconductor Mach-Zehnder modulator comprises a pair of phase modulator arm waveguides and a single driver for a push-pull modulation. A first electrode connected to p-type cladding layer of first modulator arm is maintained at a negative potential V.sub..pi., a second electrode connected to n-type cladding layer of first modulator arm and p-type cladding layer of second modulator arm is driven by a drive voltage, and a third electrode connected to n-type cladding layer of second modulator arm is maintained at a ground potential. The drive voltage changes between V.sub..pi. and V.sub..pi./2 for push-pull modulation of both modulator arms.

REFERENCES:
patent: 5778113 (1998-07-01), Yu
J. C. Cartledge, "Dispersion Compensation for 10 Gb/s Lightwave Systems Based on a Semiconductor Mach-Zehnder Modulator", IEEE Photonics Technology Letters, vol. 7, No. 2, pp. 224-226, Feb. 1995.
Heaton, J.M., et al. MMIC Compatible GaAs/A1GaAs electro-Optic Waveguide Modulators and Switches for Microwave Application., International Journal of Optoelectronics, vol. 10, No. 6, pp. 479-488, (1995).
Walker, R.G., "Novel push-Pull Drive for Broadband Electro-Optic Modulators In III-V Material", European Conference on Optical Communication, (ECOC 88), Part 1, 11-15 Sep. 1988, (1988).

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