Paper
22 December 1997 Low-chirp cascaded multiple quantum well vertical light modulator
Dong-Sun Min, Dietrich W. Langer
Author Affiliations +
Abstract
A new cascaded multiple quantum well (MQW) vertical light modulator with low output phase shift characteristics is proposed. In the proposed structure, one of the cascaded MQW modulator is used as a light switch and the other MQW modulator is used as a phase compensator to offset output phase shift. We modeled the performance of the proposed modulator in which GaAs/AlGaAs MQW waveguide segments were positioned outside the main waveguide composed of AlGaAs material. Calculations based on beam propagation method (BPM) show that the proposed modulator has an output phase shift as low as 0.35 radian for 15 dB attenuation with a total device length as short as 300 micrometers for TE single-mode operation at wavelength of 800 nm.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dong-Sun Min and Dietrich W. Langer "Low-chirp cascaded multiple quantum well vertical light modulator", Proc. SPIE 3290, Optoelectronic Integrated Circuits II, (22 December 1997); https://doi.org/10.1117/12.298239
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KEYWORDS
Modulators

Phase shifts

Signal attenuation

Waveguides

Beam propagation method

Absorption

Quantum wells

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