自动功率预均衡和时钟技术在密集波分系统的应用
摘要
在DWDM通信网络系统中,由于外在原因导致系统出现接收端光功率降低,信噪比下降,影响到网络的稳定性。本文通过理论技术分析,结合北京网通骨干传输网的实际工程建设,以华为OptiX BWS 1600Gbit/s的密集波分设备为研究基础,通过增加APE和时钟保护等方面的改进措施,使设备可自动调节各通道的发送端光功率。这样,可以在终端的控制系统的操作平台上对相应的一些设备,板卡等功能做出相应调节,在最短的时间内,使系统恢复到最佳接收。本文给出了APE技术使用前后的性能,结果表明增加APE功能是提高网络稳定性的重要方法。本文还给出了几种能够保障业务需要的时钟测试方法。
In the DWDM communication network systems, it occurs to the system that both optical power and SNR of the receiver are decreased due to external reasons, thus the stability of the network are influenced. Through theoretical and technical analysis, taking the equipment of OptiX BWS 1600Gbit/s DWDM created by Huawei as research foundation, combined with the practical project construction of the backbone transmission network of Beijing Netcom, this paper presents some measures such as increasing APE and clock protection, which enables the equipment to regulate the optical power of each channel sender automatically. In this way, we can make corresponding regulations according to equipment, integrated circuit board etc which have different functions under the operation platform of control system of terminal so as to make the system recover to the optimal reception in the shortest time. This paper compared the performance of using APE technology with that of not using APE technology, the result shows that adopting the function of APE is an important approach to enhance the stability of the network. This paper also has given several methods of testing clock which are able to guarantee the need of business.
In the DWDM communication network systems, it occurs to the system that both optical power and SNR of the receiver are decreased due to external reasons, thus the stability of the network are influenced. Through theoretical and technical analysis, taking the equipment of OptiX BWS 1600Gbit/s DWDM created by Huawei as research foundation, combined with the practical project construction of the backbone transmission network of Beijing Netcom, this paper presents some measures such as increasing APE and clock protection, which enables the equipment to regulate the optical power of each channel sender automatically. In this way, we can make corresponding regulations according to equipment, integrated circuit board etc which have different functions under the operation platform of control system of terminal so as to make the system recover to the optimal reception in the shortest time. This paper compared the performance of using APE technology with that of not using APE technology, the result shows that adopting the function of APE is an important approach to enhance the stability of the network. This paper also has given several methods of testing clock which are able to guarantee the need of business.
引文
[1] 祁永敏,王克家,唐晓东.WDM光网络中功率管理方案的研究及算法仿真. 应用科技,2003,30(3):8～11
[2] 李蔚,刘德明,胡强高,黄德修. 密集波分复用系统中的动态增益均衡技术. 光通信研究,2004,(1):2～5
[3] 黄艳琼. 动态增益均衡器DGE在DWDM的应用分析. 武汉理工大学学报·信息与管理, 2006,28(3):11～16
[4] 马晓东,阮 玉,赵 清,宋镜明. 输出功率动态均衡的WDM 模块的分析与研制. 光学与光电技术,2004,2(1):36～43
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[8] WALTER GORALSKI.OPTICAL NETWORKING & WDM.New York:Harper and Row,2003, 56～58
[9] THOMAS E,STERN KRISHNA BALA. MULTIWAVELENGTH OPTICAL NETWORK A LAYERED APPROACH. New York: Harper and Row,2001,11～18
[10] 杨淑雯. 全光光纤通信网.北京:科学出版社,2004,120～133
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[13] 邓忠礼.光同步传送网和波分复用系统.北京:北京交通大学出版社,2003, 202～267
[14]EHZAD RAZAVI. DESIGN OF INTEGRATED CIRCUITS FOR OPTICAL COMMUNICATIONS.New York:Harper and Row,2005,7～75
[15]DJAFAR , K.MYNBAEV , LOWELL , L.SCHEINER . FIBER-OPTIC COMMUNICATIONS TECHNOLOGY.New York: Harper and Row,2006,777～800
[16] 纪晓峰.光波分复用系统.北京:北京邮电大学出版社,2001,50～61
[17] ITU-T Recommendation G.811 –Timing characteristics of primary reference clocks,Microwave Theory Tech ,2006,3:118～122
[18]ITU-T Recommendation G.810 –Definitions and terminology for synchronization networks.Microwave Theory Tech,2006,3:719～726
[19]ITU-T Recommendation G.812 –Timing requirements of slave clocks suitable for use as node clocks in synchronization networks. Microwave Theory Tech,2006,3:219～226
[20]ITU-T Recommendation G.813 –Timing characteristics of SDH equipment slave clocks (SEC). Microwave Theory Tech,2006,3:1319～1327
[2] 李蔚,刘德明,胡强高,黄德修. 密集波分复用系统中的动态增益均衡技术. 光通信研究,2004,(1):2～5
[3] 黄艳琼. 动态增益均衡器DGE在DWDM的应用分析. 武汉理工大学学报·信息与管理, 2006,28(3):11～16
[4] 马晓东,阮 玉,赵 清,宋镜明. 输出功率动态均衡的WDM 模块的分析与研制. 光学与光电技术,2004,2(1):36～43
[5] 候克刚. 城域 WDM 技术发展分析[J].光通信研究,2002,(4)
[6] 张学军,张述军. DWDM 传输系统原理与测试.北京:人民邮电出版社,2000,7～10
[7] 金明晔. DWDM 技术原理与应用.北京:电子工业出版社,2004,21～23
[8] WALTER GORALSKI.OPTICAL NETWORKING & WDM.New York:Harper and Row,2003, 56～58
[9] THOMAS E,STERN KRISHNA BALA. MULTIWAVELENGTH OPTICAL NETWORK A LAYERED APPROACH. New York: Harper and Row,2001,11～18
[10] 杨淑雯. 全光光纤通信网.北京:科学出版社,2004,120～133
[11] 原荣. 光纤通信.北京:电子工业出版社,2002,17～21
[12] 张劲松,智勇,韵湘. 光波分复用技术.北京:北京邮电大学出版社,2006,15～18
[13] 邓忠礼.光同步传送网和波分复用系统.北京:北京交通大学出版社,2003, 202～267
[14]EHZAD RAZAVI. DESIGN OF INTEGRATED CIRCUITS FOR OPTICAL COMMUNICATIONS.New York:Harper and Row,2005,7～75
[15]DJAFAR , K.MYNBAEV , LOWELL , L.SCHEINER . FIBER-OPTIC COMMUNICATIONS TECHNOLOGY.New York: Harper and Row,2006,777～800
[16] 纪晓峰.光波分复用系统.北京:北京邮电大学出版社,2001,50～61
[17] ITU-T Recommendation G.811 –Timing characteristics of primary reference clocks,Microwave Theory Tech ,2006,3:118～122
[18]ITU-T Recommendation G.810 –Definitions and terminology for synchronization networks.Microwave Theory Tech,2006,3:719～726
[19]ITU-T Recommendation G.812 –Timing requirements of slave clocks suitable for use as node clocks in synchronization networks. Microwave Theory Tech,2006,3:219～226
[20]ITU-T Recommendation G.813 –Timing characteristics of SDH equipment slave clocks (SEC). Microwave Theory Tech,2006,3:1319～1327