The authors report the field-induced refractive-index variation in (GaInAsP)/InP asymmetric quantum-film structures. An enhancement of an electric field-induced refractive-index variation due to the quantum confined Stark effect was theoretically found in the GaInAsP-InAs/InP asymmetric quantum-film structure, especially in a low electric-field regime. Almost two times higher sensitivity was experimentally confirmed in a 40-period GaInAsP (8 nm)-InAs (0.3-0.6 nm)/InP (8 nm) asymmetric multiple quantum-film (MQF) structure in comparison with a symmetric one without an InAs layer at an applied electric field less than 6 V/ mu m.>
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Suzaki et al. (1991) studied this question.
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