https://scholars.lib.ntu.edu.tw/handle/123456789/292611
Title: | All-optical switching behaviors in an all-semiconductor nonlinear loop device | Authors: | JIUN-HAW LEE Wang, J.-Y. YEAN-WOEI KIANG CHIH-CHUNG YANG |
Issue Date: | 2001 | Journal Volume: | 18 | Journal Issue: | 9 | Start page/Pages: | 1334-1341 | Source: | Journal of the Optical Society of America B: Optical Physics | Abstract: | Feasibility of pulsed-signal operation of all-optical self-switching and cross switching in an all-semiconductor optical-amplifier nonlinear optical loop device is reported. The device, based on a GaAs/AlGaAs quantum-well epitaxial structure, has dimensions of 0.6 mm × 1.3 mm and a latency of 49.2 ps. It is composed of a loop amplifier, a multimode interference waveguide amplifier (MMIWA), an input leg, and an output leg. The functions of the MMIWA include input/output power splitting and nonlinear coupling. Those of the loop include signal amplification, rearrangement of the field distribution in the MMIWA, and asymmetric gain/phase modulation between the two counterpropagating signals. With these functions combined, quite efficient power-dependent switching was implemented. Numerical-simulation results agreed well in trends with experimental data. From the results of output pulse width and the pump-probe measurements, it is expected that high-speed operation of the device for all-optical modulation and multiplexing/demultiplexing is feasible. © 2001 Optical Society of America. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-0035599757&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/292611 |
ISSN: | 07403224 | SDG/Keyword: | Computer simulation; Light amplifiers; Light modulation; Nonlinear optics; Optical pumping; Optical waveguides; Phase modulation; Quantum interference devices; Semiconducting gallium arsenide; Semiconductor quantum wells; Semiconductor optical amplifiers (SOA); Optical switches |
Appears in Collections: | 電機工程學系 |
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