OPTICAL-PHASE MODULATOR UTILIZING ELECTROABSORPTION IN A FABRY-PEROT CAVITY

被引:15
作者
PEZESHKI, B
WILLIAMS, GA
HARRIS, JS
机构
[1] Solid State Laboratories, Stanford University, Stanford
关键词
D O I
10.1063/1.106444
中图分类号
O59 [应用物理学];
学科分类号
摘要
By changing the absorption coefficient in a Fabry-Perot cavity from a point below to a point above the critical matching condition, the phase of the reflected beam at resonance can be changed. At a constant refractive index, the phase switches by 180-degrees. We demonstrate a device fabricated with GaAs/AlGaAs quantum wells that uses a combination of index and absorption modulation to produce a 90-degrees phase change in a vertical Fabry-Perot cavity with an insertion loss of about 6 dB. Similar phase measurements on a conventional normally on absorption modulator yielded a chirp parameter, alpha(c) < 0.4, a value superior to that of waveguide electroabsorption devices.
引用
收藏
页码:1061 / 1063
页数:3
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