Accession Number : ADP008123

Title :   Waveguide/Photodetector Combination in SiGe for Long Wavelength Operation,

Corporate Author : TECHNISCHE UNIV BERLIN (GERMANY F R)

Personal Author(s) : Splett, A. ; Schuppert, B. ; Petermann, K.

Report Date : APR 1992

Pagination or Media Count : 2

Abstract : As silicon is a promising candidate for low cost integrated optical applications the monolithical integration of photodetectors is of major interest. Photodetectors for long wavelength operation have been realized on silicon as discrete devices and in combination with SOI-waveguides, having waveguide losses around 1dB/cm. Recently, the losses of SiGe-waveguides already reported in could be reduced to O.5dB/cm. In this work the efficient coupling between a SiGe-waveguide and a SiGe-detector is reported, which is a key component for integrated optics. Optical coherent applications, for example, then benefit from the low reflection coefficient at the waveguide/photodetector transition.

Descriptors :   *LONG WAVELENGTHS, *PHOTODETECTORS, *SILICON, *WAVEGUIDES, *GERMANIUM, *EPITAXIAL GROWTH, BENEFITS, COEFFICIENTS, COSTS, COUPLINGS, DETECTORS, INTEGRATION, LOSSES, LOW COSTS, OPERATION, OPTICS, REFLECTION, TRANSITIONS, WORK, COHERENCE, SCHOTTKY BARRIER DEVICES, SEMICONDUCTORS, MOLECULAR BEAMS, FREQUENCY.

Subject Categories : Optical Detection and Detectors
      Radiofrequency Wave Propagation
      Optics
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE