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High On/Off Ratio and Low Applied Voltage Optical Modulator Using Multiple Quantum Well Structures
Koichi WAKITA Masashi NAKAO Yuichi KAWAMURA Hajime ASAHI
IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/04/25
Print ISSN: 0000-0000
Type of Manuscript: Special Section LETTER (Special Issue: Papers from 1987 National Convention IEICE)
Category: Quantum Electronics
Full Text: PDF>>
A large on/off ratio with low drive voltage optical modulation is realized by using waveguide InGaAs/InAlAs multiple quantum well (MQW) structures grown by molecular beam epitaxy (MBE). These waveguide MQW optical modulators have a modulation on/off ratio of 90:1 (19.5 dB) at a driving voltage as low as 2.5 V.