基于复合型耦合器的新型透射式GT交错复用器及色散补偿-Core.PDFVIP

47 , 070 602 ( 2010) La ser Opt oe le ct ro nics Pr o gr ess 20 10 do i: 10. 37 88/ L OP 47 . 070602 基于复合型耦合器的新型透射式GT 交错复用器及色散补偿 1 2 2 2 2 王秀琳 张 宇 黄文财 许惠英 蔡志平 ( 1 , 361021 2 , 36 1005) G T , ( M ZI ) , , , , , , ( ) , , , , , , , GT T N 25 3 OCIS 0 60 . 1810 2 30 .20 35 A Novel Transmissive GiresTournois Interleaver Based on Composite Coupler and Its Dispersion Compensation 1 2 2 2 2 Wang Xiulin Zhang Yu Huang Wencai Xu Huiying Cai Zhiping 1 Dep a r tm en t of Phy sics , J im ei Univ er sity , Xia m en , Fuj ia n 361021, China 2 Depa r t m en t Electr on ic En gin eer in g , Xi am en Un iver sity , Xia m en , F uj ia n 361005, Chin a Abstract The transmissive GiresTournois etalon (GTE) is proposed ased on composite couplers. By com ining such GTEs with MachZehnder interferometer (MZI) , we o tain a new interleaver. The output expression is derived and numerical simulation is performed. The simulation indicates that it has good pass and flatness (flattop), large isolation, wide pass andand stop and andwidths. By optimizing the spectrum it shows that when thesum of cavities of GTEs is fixed, the larger the pass and andwidth gets, the smaller the isolation will e, i. e. , isolation and andwidth are incompati le. However, this contradiction can e overcome y increasing the sum of cavities, i. e. , interleaver!s spectral performance can e enhanced y increasing cavities. Compared with the ring resonator assisted interleaver