为解决传统通信机房和数据中心中光配线架光纤跳线布线不规范、光缆冗余过多的问题,提出一种光纤配线路由智能排查系统。首先,采用高性能、低成本的微型控制器STM32芯片控制光收发系统,通过电-光-电信号的数据收发实现光纤配线路由排查...为解决传统通信机房和数据中心中光配线架光纤跳线布线不规范、光缆冗余过多的问题,提出一种光纤配线路由智能排查系统。首先,采用高性能、低成本的微型控制器STM32芯片控制光收发系统,通过电-光-电信号的数据收发实现光纤配线路由排查;然后,设计基于通用运算放大器LM358、中继技术进行定量放大和中继处理;最后,采用Opti System软件对系统的性能进行仿真测试。测试结果表明:系统的动态范围最大达到9.24 d B,能实现光纤传输距离为46 km的排查功能;同时,系统中再生信号的质量得到了提高,能有效延长系统传输距离。展开更多
A distributed feedback(DFB) semiconductor laser with three phase shifts based on reconstruction equivalent chirp(REC) technology is proposed and investigated numerically.With the combination of multiple phase shifts a...A distributed feedback(DFB) semiconductor laser with three phase shifts based on reconstruction equivalent chirp(REC) technology is proposed and investigated numerically.With the combination of multiple phase shifts and corrugation pitch modulated(CPM) structure,we also propose a novel and more complex structure named dual CPM,which has a flatter light power distribution along the laser cavity compared with the true double phase shifts DFB laser diode(LD),while the P-I curves are nearly the same.The proposed dual CPM structure is also designed and analyzed based on REC technology.The simulation results show that,the DFB semiconductor laser with complex structure such as phase shifts,or even arbitrary variation of the grating period can be achieved equivalently and easily by changing the sampling structure.But its external characteristics are almost the same as those DFB lasers with true phase shifts,or true arbitrary variation of the grating period.The key advantage of the REC technology is that it varies only the sampling structure and keeps the seed grating(actual grating in sampling structure) period constant.So its fabrication needs only low-cost and standard holographic exposure technology.Therefore we believe this method can achieve the high-end and low-cost DFB LD for mass production.展开更多
文摘为解决传统通信机房和数据中心中光配线架光纤跳线布线不规范、光缆冗余过多的问题,提出一种光纤配线路由智能排查系统。首先,采用高性能、低成本的微型控制器STM32芯片控制光收发系统,通过电-光-电信号的数据收发实现光纤配线路由排查;然后,设计基于通用运算放大器LM358、中继技术进行定量放大和中继处理;最后,采用Opti System软件对系统的性能进行仿真测试。测试结果表明:系统的动态范围最大达到9.24 d B,能实现光纤传输距离为46 km的排查功能;同时,系统中再生信号的质量得到了提高,能有效延长系统传输距离。
基金supported by the National Natural Science Foundation of China (60877043)the National High-Tech Research & Development Program of China (2007AA03Z417)the New-Century Excellent Talents Supporting Program of the Ministry of Education of China
文摘A distributed feedback(DFB) semiconductor laser with three phase shifts based on reconstruction equivalent chirp(REC) technology is proposed and investigated numerically.With the combination of multiple phase shifts and corrugation pitch modulated(CPM) structure,we also propose a novel and more complex structure named dual CPM,which has a flatter light power distribution along the laser cavity compared with the true double phase shifts DFB laser diode(LD),while the P-I curves are nearly the same.The proposed dual CPM structure is also designed and analyzed based on REC technology.The simulation results show that,the DFB semiconductor laser with complex structure such as phase shifts,or even arbitrary variation of the grating period can be achieved equivalently and easily by changing the sampling structure.But its external characteristics are almost the same as those DFB lasers with true phase shifts,or true arbitrary variation of the grating period.The key advantage of the REC technology is that it varies only the sampling structure and keeps the seed grating(actual grating in sampling structure) period constant.So its fabrication needs only low-cost and standard holographic exposure technology.Therefore we believe this method can achieve the high-end and low-cost DFB LD for mass production.
