Design of InGaAs-InAlAs multiple-quantum-well (MQW) optical modulators

Design of InGaAs-InAlAs multiple-quantum-well (MQW) optical modulators

Design of InGaAs-InAlAs multiple-quantum-well (MQW) optical modulators is described by employing the step segment method (SSM), the three-dimensional beam propagation method (3-D BPM), and the lumped element circuit model. Optical waveguides are treated as materials with complex refractive index. Fi...

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Veröffentlicht in:IEEE journal of quantum electronics 1992-01, Vol.28 (1), p.224-230
Hauptverfasser: Kawano, K., Wakita, K., Mitomi, O., Kotaka, I., Naganuma, M.
Format: Artikel
Sprache:eng
Schlagworte:
Circuits
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Optical design
Optical elements, devices, and systems
Optical materials
Optical modulation
Optical propagation
Optical refraction
Optical variables control
Optical waveguides
Optics
Physics
Propagation losses
Quantum well devices
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Beschreibung
Zusammenfassung:Design of InGaAs-InAlAs multiple-quantum-well (MQW) optical modulators is described by employing the step segment method (SSM), the three-dimensional beam propagation method (3-D BPM), and the lumped element circuit model. Optical waveguides are treated as materials with complex refractive index. Field distributions, power confinement factors ( Gamma factors), propagation losses, etc. are calculated. It is found that the overlap integral is needed to calculate accurately coupling losses between the optical waveguides and single-mode fibers in place of the simple Gaussian beam-coupling formula and that quasi-single-mode propagation can be obtained even for thick core structures. Design procedures for the driving voltage, and frequency characteristics are also discussed.< >
ISSN:0018-9197
1558-1713
DOI:10.1109/3.119517