Optical modulator circuit

Details Optical modulator circuit Optical modulator circuit

1995-12-07

1998-08-11

Hellner, Mark

Optical: systems and elements

Optical modulator

Light wave temporal modulation

385 2, 330 55, G02F 103, H03F 326

Patent

active

057935165

ABSTRACT:
A circuit arrangement is presented for an optical modulator with an optical modulator diode (MD) driven in the blocking direction which, in addition to a shunt resistor (RN) wired in parallel with the modulator diode, contains a damping resistor (RD) wired ahead of the modulator diode, for attenuating unwanted reflections. The damping resistor is preferably wired ahead of the parallel circuit of modulator diode and shunt resistor, and forms part of the terminal resistance of the connecting line carrying the modulation signal (U.sub.m).

REFERENCES:
patent: 3661443 (1972-05-01), Harris et al.
patent: 5373384 (1994-12-01), Hebert
patent: 5477367 (1995-12-01), van der Heijden
patent: 5488503 (1996-01-01), Schaffner et al.
Patent Abstracts of Japan, vol. 018, No. 464 (E-1598) 29 Aug. 1994 & JP-A-06 152206 (Toshiba Corp) 31 May 1994.
Journal of Lightwave Technology, Bd. 10, Nr. 1, Jan. 1992, New York US, pp. 71-77, XP000273022 "Chirping characteristic and frequency response of MQW optical intensity modulator".
Patent Abstracts of Japan, vol. 014, No. 178 (E-0915) 10 Apr. 1990 & JP-A-02 030201 (Fujitsu Ltd) 31 Jan. 1990.
Patent Abstracts of Japan, vol. 005, No. 153 (E-076) 26 Sep. 1981 & JP-A-a56 084017 (Mitsubishi Electric Corp.).
"A 10-Gb/s Optical Transmitter Module with a Monolithically Integrated Electroabsorption Modulator with a Laser" by Hironishi et al. IEE Photonics TGechnology Letters, vol. 2, No. 12, Dec. 1990, pp. 896-898.

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