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    • 6. 发明授权
    • Semiconductor optical reflector and a method of manufacturing the same
    • 半导体光反射体及其制造方法
    • US6064685A
    • 2000-05-16
    • US256307
    • 1999-02-24
    • Hans BissessurCatherine Graver
    • Hans BissessurCatherine Graver
    • G02B5/08G02B6/12G02B6/122G02B6/124H01S5/00H01S5/12H01S5/14H01S5/183H01S3/08
    • G02B6/124G02B6/12007H01S5/1215H01S5/18361
    • The invention relates to a semiconductor optical reflector serving in particular for being disposed facing an integrated laser cavity so as to feed light back into said cavity, and enable it to oscillate continuously. The reflector is made up of a plurality of cascaded Bragg reflector sections. More particularly, said sections are of the same length L and have the same coupling coefficient, and the length L of each pair of sections is given by the following relationship:L=.lambda..sup.2 /[(n.sub.i+1 +n.sub.i).times.1.7(n.sub.i+1 .LAMBDA..sub.i+1 -n.sub.i .LAMBDA..sub.i)]where .lambda. is the mean value of the Bragg wavelengths reflected by the reflector;n.sub.i+1 and n.sub.i are the respective effective refractive indices of said adjacent sections; and.LAMBDA..sub.i+1 and .LAMBDA..sub.i are the respective periods of said adjacent sections.The reflector of the invention has a wide spectrum band independent of the value of the coupling coefficient.
    • 本发明涉及一种半导体光学反射器,其特别用于面向集成的激光腔,以便将光馈送到所述空腔中,并使其能够连续振荡。 反射器由多个级联的布拉格反射器部分组成。 更具体地说,所述部分具有相同的长度L并且具有相同的耦合系数,并且每对部分的长度L由以下关系式给出:L =λ2 / [(ni + 1 + ni)x1.7 (ni + 1 LAMBDA i + 1-ni LAMBDA i)]其中λ是由反射器反射的布拉格波长的平均值; ni + 1和ni是所述相邻部分的相应有效折射率; LAMBDA i + 1和LAMBDA i是所述相邻部分的相应周期。 本发明的反射器具有与耦合系数的值无关的宽谱带。