Study on multimode relaxation oscillation of VCSELs and EELs

LI Xiao-feng; PAN Wei; LUO Bin; ZHAO Zheng; DENG Guo

Based on multimode rate equations,the relaxation oscillation of vertical-cavity surface-emitting lasers(VCSELs)and edge-emitting lasers(EELs)has been studied through SIMULINK provided by MATLAB.The results show that EELs with multiple longitudinal modes have higher relaxation oscillation frequency and shorter turn-on delay time,which are relatively unchanged for VCSELs case.The simulation results also verify the following conclusions:firstly,VCSELs has the merits of single-mode working and high-speed modulation; secondly,the devices with higher bias current or larger spontaneous emission factor exhibit better temporary characteristics;thirdly,the variation rate of VCSELs'side-mode suppression ratio(SMSR)with bias current is higher than that of EELs.Furthermore,the side-mode intensities augment at the same rate with increasing the spontaneous emission factor,and the main-mode intensity decreases accordingly.Controlling this factor effectively can optimize the single-mode characteristic of VCSELs.

1. Institute of Computer Communication Engineering, Southwest Jiaotong University, Chengdu 610031, China;

2. National Key Laboratory of Broad-band Fiber Transmission and Communication Network Technology, University of Electronic Science and Technology, Chengdu 610054, China;

3. Institute of Science, Southwest Jiaotong University, Chengdu 610031, China

Received Date: 2003-06-09

Accepted Date: 2003-08-11

Available Online: 2004-05-25

Abstract: Based on multimode rate equations,the relaxation oscillation of vertical-cavity surface-emitting lasers(VCSELs)and edge-emitting lasers(EELs)has been studied through SIMULINK provided by MATLAB.The results show that EELs with multiple longitudinal modes have higher relaxation oscillation frequency and shorter turn-on delay time,which are relatively unchanged for VCSELs case.The simulation results also verify the following conclusions:firstly,VCSELs has the merits of single-mode working and high-speed modulation; secondly,the devices with higher bias current or larger spontaneous emission factor exhibit better temporary characteristics;thirdly,the variation rate of VCSELs'side-mode suppression ratio(SMSR)with bias current is higher than that of EELs.Furthermore,the side-mode intensities augment at the same rate with increasing the spontaneous emission factor,and the main-mode intensity decreases accordingly.Controlling this factor effectively can optimize the single-mode characteristic of VCSELs.

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Reference (8)

[1]	BABIC D I,STREUBEL K,MIRIN R P et al.Room temperature continuous-wave operation of 1.54μm vertical cavity lasers[J].IEEE Photon Technol Lett,1995,7(11):1225～1227.
[2]	邓果,潘炜,罗斌.深度调制下VCSELs典型结构参数的研究[J].光电子·激光,2003,14(6):562～565.
[3]	AGRAWAL G P,DUTTA N K.Semiconductor lasers[M].New York:van Nostran Reinhold,1993.231～311.
[4]	潘炜,张晓霞,罗斌.垂直腔激光器中弛豫振荡频率的优化控制[J].激光与红外,2002,32(1):27～29.
[5]	NABIL M L.Relaxation oscillations and stability[J].IEEE J Q E,1982,18(12):1992～1994.
[6]	张晓霞,潘炜,罗斌 et al.半导体微腔激光器瞬态响应及调制特性分析[J].激光技术,2001,25(3):221～224.
[7]	CHOA F S,LEE Y H,KOCH T L et al.High-speed modulation of vertical-cavity surface-emitting lasers[J].IEEE Photon Technol Lett,1991,3(8):697～699.
[8]	郭长志,陈水莲.分布反射面发射垂直微腔半导体激光器的微腔效应[J].物理学报,1997,46(9):1731～1743.

[1]	BABIC D I,STREUBEL K,MIRIN R P et al.Room temperature continuous-wave operation of 1.54μm vertical cavity lasers[J].IEEE Photon Technol Lett,1995,7(11):1225～1227.
[2]	邓果,潘炜,罗斌.深度调制下VCSELs典型结构参数的研究[J].光电子·激光,2003,14(6):562～565.
[3]	AGRAWAL G P,DUTTA N K.Semiconductor lasers[M].New York:van Nostran Reinhold,1993.231～311.
[4]	潘炜,张晓霞,罗斌.垂直腔激光器中弛豫振荡频率的优化控制[J].激光与红外,2002,32(1):27～29.
[5]	NABIL M L.Relaxation oscillations and stability[J].IEEE J Q E,1982,18(12):1992～1994.
[6]	张晓霞,潘炜,罗斌 et al.半导体微腔激光器瞬态响应及调制特性分析[J].激光技术,2001,25(3):221～224.
[7]	CHOA F S,LEE Y H,KOCH T L et al.High-speed modulation of vertical-cavity surface-emitting lasers[J].IEEE Photon Technol Lett,1991,3(8):697～699.
[8]	郭长志,陈水莲.分布反射面发射垂直微腔半导体激光器的微腔效应[J].物理学报,1997,46(9):1731～1743.

Study on multimode relaxation oscillation of VCSELs and EELs

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References

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通讯作者: 陈斌, bchen63@163.com

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