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Multimode WDM optical data links with monolithically integrated multiple-channel VCSEL and photodetector arrays

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4 Author(s)
Syn-Yem Hu ; Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA ; Ko, J. ; Hegblom, E.R. ; Coldren, L.A.

We report on the design and implementation of a novel multiple-wavelength optical data link for low-cost multimode wavelength-division multiplexing (WDM) local-area network applications. This link utilizes a monolithically integrated multiple-wavelength vertical-cavity laser array and a narrow-band resonant-cavity photodetector array to transmit multiple channels of information simultaneously via a single multimode fiber. A detailed analysis on wavelength tuning and threshold characteristics of different laser cavity designs is presented. Theoretical results are compared to our experimental data. On the receiver part, both Schottky and p-i-n photodetectors with a single- or coupled-cavity structure are discussed. A novel p-i-n resonant-cavity photodetector design with a partially oxidized front mirror for linewidth control is proposed. Moreover, we also demonstrate preliminary measurements on the optical link built with our multiple-wavelength vertical-cavity laser array and photodetector array. Finally, the feasibility of constructing a multiwavelength optical data link with a single dual-core multimode fiber and an integrated laser/detector array is evaluated

Published in:

Quantum Electronics, IEEE Journal of  (Volume:34 ,  Issue: 8 )

Date of Publication:

Aug 1998

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