红外与毫米波学报
紅外與毫米波學報
홍외여호미파학보
JOURNAL OF INFRARED AND MILLIMETER WAVES
2008年
5期
321-325
,共5页
半导体光放大器%布拉格反射镜%放大的自发辐射%增益%噪声指数
半導體光放大器%佈拉格反射鏡%放大的自髮輻射%增益%譟聲指數
반도체광방대기%포랍격반사경%방대적자발복사%증익%조성지수
semiconductor optical amplifier%Bragg reflector%amplified spontaneous emission%gain%noise figures
提出了一种新型微腔半导体光放大器结构,该半导体放大器在普通行波光放大器的波导结构上引入了上下布拉格反射镜,并在波导前后两侧的上端面上分别刻蚀出入射和出射光学窗口,其上蒸镀增透膜层.信号光以一定的倾角斜入射到波导中,以之字型路线沿波导传播.提出了一个完整的、考虑了微腔特性的稳态模型,系统模拟了微腔半导体光放大器的特性.结果表明该微腔半导体光放大器的光纤到光纤增益可达40dB,而噪声指数只有3.5dB.
提齣瞭一種新型微腔半導體光放大器結構,該半導體放大器在普通行波光放大器的波導結構上引入瞭上下佈拉格反射鏡,併在波導前後兩側的上耑麵上分彆刻蝕齣入射和齣射光學窗口,其上蒸鍍增透膜層.信號光以一定的傾角斜入射到波導中,以之字型路線沿波導傳播.提齣瞭一箇完整的、攷慮瞭微腔特性的穩態模型,繫統模擬瞭微腔半導體光放大器的特性.結果錶明該微腔半導體光放大器的光纖到光纖增益可達40dB,而譟聲指數隻有3.5dB.
제출료일충신형미강반도체광방대기결구,해반도체방대기재보통행파광방대기적파도결구상인입료상하포랍격반사경,병재파도전후량측적상단면상분별각식출입사화출사광학창구,기상증도증투막층.신호광이일정적경각사입사도파도중,이지자형로선연파도전파.제출료일개완정적、고필료미강특성적은태모형,계통모의료미강반도체광방대기적특성.결과표명해미강반도체광방대기적광섬도광섬증익가체40dB,이조성지수지유3.5dB.
A novel microcavity semiconductor optical amplifier (MCSOA) was proposed by incorporating top and bottom distributed Bragg reflectors (DBRs) into the waveguide structure of conventional traveling-wave semiconductor optical amplifiers(TW-SOAs). The incoming(outgoing) light beam incidented onto (escaped from) the waveguide structure at a oblique angle through two optical windows, where the top DBR was etched away, and anti-reflection coating was deposited. The light beams inside the optical cavity were reflected repeatedly between two DBRs and propagated along waveguide in a zigzag optical path. The performance of the MCSOA was systematically investigated by extensive numerical simulation based on a traveling-wave model by taking into account the comprehensive effects of DBRs on both the amplification of signals and the filtering of spontaneous emission(SE). Our results show that the MCSOA is capable of achieving a fiber-to-fiber gain as high as 40dB and a low noise figure is less than 3.5dB.