Patent ID: 8300992
Filing Date: 2012-10-30
Classification: B82Y,G02B,G02F

Abstract:
1. A semiconductor optical modulator with a Mach-Zender type having a semiconductor substrate, an optical de-coupler, an optical coupler, and first and second waveguides each provided on said semiconductor substrate and optically coupled with said optical de-coupler and said optical coupler, said optical modulator further comprising: a first resistor connecting said first waveguide and said second waveguide; and a second resistor for grounding said second waveguide, wherein said first and second resistors are connected in series, wherein said first waveguide is provided with a driving signal superposed with a first bias voltage, and said second waveguide is biased by a second bias voltage generated by a resistive divider constituted of said first and second resistors.