Optical modulator and optical modulating method

Details Optical modulator and optical modulating method Optical modulator and optical modulating method

2005-03-18

2008-03-18

Ben, Loha (Department: 2873)

Optical: systems and elements

Optical modulator

C359S239000, C359S245000, C385S001000, C385S002000, C385S003000, C372S026000, C372S036000, C372S038100, C342S060000, C342S200000

Reexamination Certificate

active

07345803

ABSTRACT:
In an optical modulation device (10) having an electrical/optical interaction region (11), an electrical signal line (3) is connected to an electrical signal input terminal (2a), another electrical signal line (4a) is connected to an electrical signal output terminal (2b), and a reflection control circuit (5) is connected to the other electrical signal line (4a). This reflection control circuit (5) is an impedance element which positively reflects an output electrical signal from the interaction region (11) of the optical modulation device (10). This makes it possible to raise the upper-limiting frequency at which the E/O (Electrical-to-Optical) response characteristic can be improved, and improve the flatness of the frequency characteristic of the E/O response without deteriorating the absolute value of the E/O response.

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