Patent classifications
H
H03
H03F
2203/00
H03F2203/45
H03F2203/45486
H03F2203/45486
Optical modulator driver circuit and optical transmitter
10243664
·
2019-03-26
·
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- Munehiko Nagatani ,
- Hideyuki Nosaka ,
- Toshihiro Itoh ,
- Koichi Murata ,
- Hiroyuki Fukuyama ,
- Takashi Saida ,
- Shin Kamei ,
- Hiroshi Yamazaki ,
- Nobuhiro Kikuchi ,
- Hiroshi KOIZUMI ,
- Masafumi Nogawa ,
- Hiroaki Katsurai ,
- Hiroyuki UZAWA ,
- Tomoyoshi Kataoka ,
- Naoki Fujiwara ,
- Hiroto KAWAKAMI ,
- Kengo Horikoshi ,
- Yves Bouvier ,
- Mikio Yoneyama ,
- Shigeki Aisawa ,
- Masahiro Suzuki
An optical modulator driver circuit (1) includes an amplifier (50, Q10, Q11, R10-R13), and a current amount adjustment circuit (51) capable of adjusting a current amount of the amplifier (50) in accordance with a desired operation mode. The current amount adjustment circuit (51) includes at least two current sources (IS10) that are individually ON/OFF-controllable in accordance with a binary control signal representing the desired operation mode.