Demonstration of all-optical modulation in a vertical guided-wave nonlinear coupler | Zendy

Paul R. Berger | Zendy; Yi Chen | Zendy; P. Bhattacharya | Zendy; J. Pamulapati | Zendy; G. C. Vezzoli | Zendy

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Demonstration of all-optical modulation in a vertical guided-wave nonlinear coupler

Author(s) -

Paul R. Berger,

Yi Chen,

P. Bhattacharya,

J. Pamulapati,

G. C. Vezzoli

Publication year - 1988

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.99182

Subject(s) - materials science , optoelectronics , refractive index , modulation (music) , optics , waveguide , molecular beam epitaxy , power dividers and directional couplers , nonlinear system , coupling (piping) , excitation , epitaxy , physics , nanotechnology , layer (electronics) , quantum mechanics , acoustics , metallurgy

The performance characteristics of an AlGaAs dual waveguide vertical coupler with a nonlinear GaAs/AlGaAs multiquantum well coupling medium are demonstrated. The structure was grown by molecular beam epitaxy and fabricated by optical lithography and ion milling. The nonlinear coupling and modulation behavior is identical to that predicted theoretically. The nonlinear index of refraction and critical input power are estimated to be n2=1.67×10−5 cm2/W and Pc=170 W/cm2, respectively. This device also allows reliable measurement of the nonlinear refractive index for varying quantum well and optical excitation parameters

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