Low-chirp cascaded multiple quantum well vertical light modulator

Autor:	Dietrich W. Langer, Dong-Sun Min
Rok vydání:	1997
Předmět:	Materials science business.industry Phase (waves) Electro-optic modulator Photodetector law.invention Optics Optical modulator Beam propagation method law Electro-absorption modulator Chirp Optoelectronics business Waveguide
Zdroj:	SPIE Proceedings.
ISSN:	0277-786X
DOI:	10.1117/12.298239
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4523379ed5eb6e5dcd50d39b3f28700b https://doi.org/10.1117/12.298239 Zobrazit plný text záznamu