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Low-loss single-mode GaAs/AlGaAs miniature optical waveguides with straight and bending structures

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2 Author(s)
Takeuchi, H. ; Optoelectron. Lab., NTT, Kanagawa, Japan ; Oe, K.

Low-loss single-mode GaAs/AlGaAs miniature optical waveguides fabricated for use in monolithically integrated optical circuits are discussed. The propagation characteristics of these waveguides with straight and S-bending structures have been investigated at wavelengths of 1.30 and 1.55 μm. The lowest propagation losses are estimated to be 0.58 dB/cm and 0.69 dB/cm at wavelengths of 1.30 and 1.55 μm, respectively. The total loss of an S-bending waveguide with a curvature radius of 2 mm and with a lateral displacement of 200 μm was 0.61 dB and 0.46 dB at wavelengths of 1.30 and 1.55 μm. The fabricated single-mode strip-loaded waveguides proved to be suitable for application of the semiconductor waveguide into monolithically integrated optical circuits

Published in:

Lightwave Technology, Journal of  (Volume:7 ,  Issue: 7 )

Date of Publication:

Jul 1989

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