Optical waveguides – Temporal optical modulation within an optical waveguide
Reexamination Certificate
2006-03-07
2006-03-07
Epps, Georgia (Department: 2873)
Optical waveguides
Temporal optical modulation within an optical waveguide
C385S003000, C385S014000, C359S245000, C359S248000, C359S254000
Reexamination Certificate
active
07010179
ABSTRACT:
A differential drive semiconductor optical modulator includes: a differential driver circuit having output pads which can output a pair of differential signals; a transmission-line substrate having transmission lines connected to the output pads and ground lines; and semiconductor modulators mounted on the transmission-line substrate, arranged in series along a common optical axis; terminal resistors connected to terminal ends of the transmission lines and inductances interposed between the semiconductor modulators and the terminal resistors, on the transmission-line substrate, producing an appropriate optical modulation waveform with a high extinction ratio and enhanced modulation bandwidth.
REFERENCES:
patent: 5930022 (1999-07-01), Okuma
patent: 6192167 (2001-02-01), Kissa et al.
patent: 2002-277840 (2002-09-01), None
patent: 2002-296552 (2002-10-01), None
“OFC 2002 Optical Fiber Communication Conference and Exhibit; Changing at light speed”,IEEE, Mar. 17-22, 2002, pp. 336-337, Anaheim CA .
Hatta Tatsuo
Okada Norio
Dinh Jack
Epps Georgia
Leydig , Voit & Mayer, Ltd.
Mitsubishi Denki & Kabushiki Kaisha
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