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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
Publication
IEICE TRANSACTIONS (1976-1990)
Vol.E70
No.4
pp.300-302 Publication Date: 1987/04/25 Online ISSN:
DOI: Print ISSN: 0000-0000 Type of Manuscript: Special Section LETTER (Special Issue: Papers from 1987 National Convention IEICE) Category: Quantum Electronics Keyword:
Full Text: PDF>>
Summary:
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.
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