A new method for extending rate equation based VCSEL model with multimode spectral characteristic  

作　　者：Anzhong LIANG Chuanchuan YANG Cheng ZHANG Jingjing SONG Hongbin LI 

机构地区：[1]State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computer Science, Peking University

出　　处：《Science China(Information Sciences)》2018年第12期151-158,共8页中国科学（信息科学）（英文版）

摘　　要：An accurate VCSEL model is important to evaluate the performance of VCSEL-based high speed short range optical interconnect system. Current VCSEL models show no evidence of the multimode spectral characteristic, which leads to an inaccurate performance estimation of VCSEL-based high speed optical interconnect system especially with large chromatic dispersion. To overcome this problem, we propose a new method to introduce multimode spectral characteristic into current VCSEL models, which extends the spatiotemporal multimode rate equations by calculating the wavelength shift of the VCSEL transverse modes. A VCSEL-multimode fiber(MMF) based short range optical interconnect simulation system is then built using our modified VCSEL model by VPItransmissionMaker. The symbol broadening and the BER performance of 15 Gb/s NRZ signal are tested in both left-tilted differential mode delay(DMD) profile MMF(L-MMF) and right-tilted DMD profile MMF(R-MMF). Simulation results validate our proposed method and indicate that the spectral characteristic is a key component for VCSEL models.An accurate VCSEL model is important to evaluate the performance of VCSEL-based high speed short range optical interconnect system. Current VCSEL models show no evidence of the multimode spectral characteristic, which leads to an inaccurate performance estimation of VCSEL-based high speed optical interconnect system especially with large chromatic dispersion. To overcome this problem, we propose a new method to introduce multimode spectral characteristic into current VCSEL models, which extends the spatiotemporal multimode rate equations by calculating the wavelength shift of the VCSEL transverse modes. A VCSEL-multimode fiber(MMF) based short range optical interconnect simulation system is then built using our modified VCSEL model by VPItransmissionMaker. The symbol broadening and the BER performance of 15 Gb/s NRZ signal are tested in both left-tilted differential mode delay(DMD) profile MMF(L-MMF) and right-tilted DMD profile MMF(R-MMF). Simulation results validate our proposed method and indicate that the spectral characteristic is a key component for VCSEL models.

关 键 词：short-range optical interconnect vertical cavity surface emitting lasers VCSEL multimode rate equations multimode spectral characteristic multimode fiber 

分 类 号：N[自然科学总论]