Premium
Multiple‐quantum‐well optical modulators and their monolithic integration with DFB lasers for optical‐fiber communications (invited paper)
Author(s) -
Wakita Koichi,
Kotaka Isamu
Publication year - 1994
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.4650070310
Subject(s) - optoelectronics , laser , ultrashort pulse , chirp , modulation (music) , quantum confined stark effect , electro absorption modulator , optical modulator , optics , quantum well , phase modulation , optical communication , materials science , physics , quantum dot laser , phase noise , acoustics
High‐speed, low‐driving‐voltage operation of multiple‐quantum‐well (MQW) external modulators based on the quantum‐confinement Stark effect (QCSE) operating at long wavelengths are reviewed. We discuss the design and characteristics of ultrafast intensity and phase MQW modulators that have been developed by our group and we compare them with those of other material systems and structures based on a defined figure of merit for external modulators. In addition, we discuss a new integrated light source that enables external modulation of an in‐plane DFB laser to reduce wavelength chirping and coupling loss with a laser and a modulator. Finally, we describe new applications for optical soliton pulse generation using the above intensity modulator. © 1994 John Wiley & Sons, Inc.