سال انتشار: ۱۳۸۷

محل انتشار: دومین کنگره بین المللی علوم و فناوری نانو

تعداد صفحات: ۲

نویسنده(ها):

G.Sh Shmavonyan – State Engineering University of Armenia, 105 Teryan street, Yerevan, 0002, Armenia
S.M. Zendehbad –

چکیده:

Broadband characteristics are attractive for optical fiber communication. Recent technology has made optical fiber exhibits very broad bandwidths, almost covering the range from 1200 to 1600 nm with a loss of less than 1 dB/km. However, to cover the entire usable bandwidth of an optical fiber, many conventional SLDs having different spectral range are required because each conventional SLD usually has a bandwidth of less than 50 nm. Therefore, if the bandwidth of SLDs could be broadened, they will be even more attractive. SLDs. Multiple quantum well (MQW) is a convenient way that has been widely used to broaden the bandwidth of SLDs.[1] However the design is not straightforward because the carrier distribution within the MQW is not uniform.[2] By considering the uniform carrier distribution within MQWs, we demonstrate that the spectral bandwidth of SLDs can be significantly broadened by using properly designed non-identical MQWs grown on InP substrate.