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Proceedings Paper

Nonlinear GaAlInAs/AlInAs multiple-quantum-well materials and devices at 1.3 microns for ultrafast TDMA interconnects
Author(s): Mark F. Krol; Steven T. Johns; Raymond K. Boncek; Tomoko Ohtsuki; Brian P. McGinnis; Chia Chen Hsu; Galina Khitrova; Hyatt M. Gibbs; Nasser Peyghambarian
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Paper Abstract

Multiple Quantum Well (MQW) materials and devices have been designed and demonstrated to have large optical nonlinearities which are suitable for use in ultrafast optical TDMA interconnects at 1.3 micrometers . The MQW materials consist of GaAlInAs wells and AlInAs barriers grown lattice-matched to a semi-insulating InP substrate by molecular beam epitaxy. The MQW samples exhibited large absorption changes at 1.3 micrometers due to bandfilling and exchange effects. The carrier saturation densities near the heavy-hole exciton peak were similar to those for GaAs/AlGaAs MQWs. The large optical nonlinearities near 1.3 micrometers were used to demonstrate an all-optical, high-contrast asymmetric reflection modulator suitable for performing all-optical time-division demultiplexing at low pump intensities. The modulator consists of an asymmetric Fabry-Perot etalon which utilizes a nonlinear MQW spacer. The modulator exhibited an on/off contrast ratio of greater than 1000:1 and an insertion loss of 2.2 dB at a pump intensity of 30 kW/cm2. The recovery of the modulator is shown to decay with a time-constant of 725 ps.

Paper Details

Date Published: 26 February 1993
PDF: 7 pages
Proc. SPIE 1790, Analog Photonics, (26 February 1993); doi: 10.1117/12.141716
Show Author Affiliations
Mark F. Krol, Air Force Photonics Ctr. at Rome Lab. (United States)
Steven T. Johns, Air Force Photonics Ctr. at Rome Lab. (United States)
Raymond K. Boncek, Air Force Photonics Ctr. at Rome Lab. (United States)
Tomoko Ohtsuki, Optical Sciences Ctr. Univ of Arizona (United States)
Brian P. McGinnis, Optical Sciences Ctr. Univ. of Arizona (United States)
Chia Chen Hsu, Optical Sciences Ctr. Univ. of Arizona (United States)
Galina Khitrova, Optical Sciences Ctr. Univ. of Arizona (United States)
Hyatt M. Gibbs, Optical Sciences Ctr. Univ. of Arizona (United States)
Nasser Peyghambarian, Optical Sciences Ctr. Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 1790:
Analog Photonics
Andrew R. Pirich; Paul Sierak, Editor(s)

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