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GAAS/GAALAS MULTIQUANTUM WELL WAVE-GUIDES FOR ALL-OPTICAL SWITCHING AT 1.55-MU-M
被引:10
|作者:
TSANG, HK
GRANT, RS
PENTY, RV
WHITE, IH
SOOLE, JBD
COLAS, E
LEBLANC, HP
ANDREADAKIS, NC
KIM, MS
SIBBETT, W
机构:
[1] UNIV ST ANDREWS,DEPT PHYS,ST ANDREWS KY16 9SS,SCOTLAND
[2] BELLCORE,RED BANK,NJ 07701
[3] KOREA ADV INST SCI & TECHNOL,SEOUL,SOUTH KOREA
关键词:
SEMICONDUCTOR DEVICES AND MATERIALS;
WAVE-GUIDES;
OPTICAL SWITCHING;
D O I:
10.1049/el:19911235
中图分类号:
TM [电工技术];
TN [电子技术、通信技术];
学科分类号:
0808 ;
0809 ;
摘要:
The first measurements of selfphase modulation and nonlinear absorption in a GaAs/GaAlAs multiquantum well (MQW) waveguide near the half-bandgap resonance are reported. An intensity-dependent refractive index coefficient n2 of 9 x 10(-14) cm2/W and a two-photon absorption coefficient of 0.15 cm/GW at 1.55-mu-m wavelength for TM light were obtained. This corresponds to an intensity-independent figure of merit of 24rad phase change in one nonlinear absorption length, high enough to allow the implementation of subpicosecond all-optical switches at 1.55-mu-m wavelength.
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页码:1993 / 1995
页数:3
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