Microwave frequency range electro-optic modulator with efficient

Details Microwave frequency range electro-optic modulator with efficient Microwave frequency range electro-optic modulator with efficient

1990-03-30

1993-05-04

Moskowitz, Nelson

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359315, 385 3, 385 14, G02B 5174, G02B 610, G02B 514

Patent

active

052086976

ABSTRACT:
A travelling-wave Mach-Zehnder electro-optic modulator (10) for operation at microwave electrical input signal frequencies has an electrical modulation electrode structure (26,34) which constitutes a coplanar waveguide (24). An electrical input signal connector (80) is coupled to a microstrip line (38) having an output impedance which is significantly different from the input impedance of the waveguide (24). A Chebyshev impedance matching transformer (50) couples the input signal from the input connector (80) to the modulation electrode structure (26,34), while matching the output impedance of the microstrip line (38) to the input impedance of the waveguide (24) to maximize the coupling efficiency and minimize return loss. The modulato

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