dwdm roadm

1 Introduction In recent years, the extensive development of IP, Data, video, and other services has quickly consumed optical fiber bandwidth, and the configured wavelength is gradually occupied. The development of services has shown dynamic characteristics. While expanding the capacity of the WDM system, it is bound to convert to the new generation WDM System ULH + ROADM. ROADM (Reconfigurable Optical Spli

connected to the optical network cannot change significantly. Even by 2017, services with 10 Gbit/s or lower end-to-end management will still occupy over 95% of the access ports in the optical transmission network [IV]. The transition to 100 Gbit/s DWDM wavelength causes a large number of rate mismatch/discontinuous problems between Client Services and WDM uplink ports, resulting in a large amount of inefficient use of optical bandwidth. Multiplexing

I wanted to use the view code written by my colleagues as a module, but then I realized it was like this. Create view zc_ypz Select zcgs, dwdm, zysx, hj, 1 as kpml, sum (yzje) as aa, 0 as bb, 0 as cc, 0 as dd from zc_skpk Where zcgs = 1 and zysx Union Select zcgs, dwdm, zysx, hj, 2 as kpml, sum (yzje) as aa, 0 as bb, 0 as cc, 0 as dd from zc_skpk Where zcgs = 1 and zysx Union Select zcgs,

OTN switching P-OTN effectively reduces network cost by 100 GB (2) Globally, the growth rate of mobile and Internet traffic is unprecedented. The reasons for this phenomenon include the growth of cloud services, mobile broadband, and Internet-based on-demand video streaming services. Cisco predicts that from 2012 to 2017, Internet IP traffic will triple to 120 bytes per month, and mobile data traffic will increase 13 times, more than 11 bytes [I] each month. Bell lab predicts that traffic in th

Tags: style blog http io ar color OS using SPScenario Description : There is a device table in the database, the field DWDM stores the factory number, the field ZNBH is the device number. DWDM and ZNBH are one-to-many relationships. The values in the database need to be loaded into listOne of the internal listlistThe data in the database is as follows:Case Study : According to test instructions, combined wi

Generally, we define a metropolitan optical network as a light transmission network spanning dozens of km to hundreds of kilometres, generally serving large, business-focused urban areas. Metropolitan Optical Network bridging between long-distance network and access network, the access network in the enterprise network of various services connected to the backbone of the operator network. In recent years, with the large-scale construction of long-distance transmission backbone network, with the

development of related technologies and devices is critical in addition to these well-defined and developed architectures and the implementation of the Protocols. Besides the general requirements of OTN, the optoelectronic devices in Ason in the network performance detection, control, a variety of tunable devices, optical switches and switch arrays have high requirements, the advanced, reliability and economy of these new devices will directly affect the system equipment and even the entire net

means of resizing the current optical fiber communication network. As a system concept, Wavelength Division Multiplexing technology usually has three kinds of Multiplexing methods, namely, Wavelength Division Multiplexing and Coarse Division Multiplexing (CWDM, Coarse Wavelength Division Multiplexing) at 1 310 nm and 1 550 nm wavelengths) and Dense Wavelength Division Multiplexing (DWDM, Dense Wavelength Division Multiplexing ). (1) wavelength divisi

-called "frontend network" refers to the egress of the data center for enterprise campus network or enterprise wide area network. Frontend networks of different data centers (primary centers and disaster recovery centers) are interconnected through IP technology, and clients of the campus or branch access data centers through the frontend network. When a disaster occurs in the primary data center, the front-end network is quickly converged, and the client accesses the disaster recovery center to

early detection Advanced ASIC RTP, RTCP Double funnel universal cell rate algorithm Dwdm Rsvp Rated access crash rate Sonet Diffserv, CAR Cisco Express Forwarding CPU processing power g.729, G.729a:cs-acelp Extended Access table Adsl,radsl,sdsl frf.11/frf.12 Token bucket algorithm Multilink PPP Frame Relay D

Create or Replace procedure Cuidong_insert_records (P_ny in varchar2) is qystr VARCHAR2 (260): = ' Daqing, Jilin, Liaohe, Jidong, Jiangsu, Shengli, Dong Hua branch, gas storage, Zhongyuan, Henan, CNOOC, Hainan, north China, Jianghan, Zhejiang Exploration, '; qy MK_CSYB_XBSC. qy%type; qy_position Number (2); qy_loop number (2): = 1; dwdmstr VARCHAR2 (+): = ' ykgfgs,ekgfgs,skgfgs,jdfwzx,xwwhzx, tbwgs,ghshgs,gsshgs, JSJDZX, Syjlzx,hse,gcjl,txgs,gsgs,js,sd,kygs, '; temp_dwdmstr varchar2;

= insert_sql DWDM ", ' D1 " ', ' " T1 " ', ' " T2 ",--------------------------------------------------------------------------^The minor error is also defined on the SQL statement, checking the pairing of quotes, single quotes, and so on. 4 Below is a browser-based online user registration process, the author in the use of some skills, dedicated to interested readers. ......Set Conn = Server.CreateObject ("ADODB. Connection ")Conn.Open "Odbclink",

Yan Xiaoying of Transmission Design Institute of Zhejiang Post and Telecommunications planning and Design Institute There is no doubt that the revolution brought about by IP in the data communication world is decisive. It is conceivable that the first real handshake between the ITU-T and the IETF is tantamount to announcing the birth of a new generation of technology. Based on the characteristics of metropolitan area Network data Services, there are several examples of optimizing optical netwo

power monitoring circuit monitors the changes in the optical power value of the active and standby optical fibers in real time. It has a built-in photoelectric sensor and a 1 × 2 optical splitter. The optical splitting ratio is usually 97: 3, this is equivalent to increasing the attenuation of about 0.25 dB on the transmission line, and is suitable for online applications. The optical switching circuit has a built-in 1X2 or 2x2 optical switch, which is controlled to automatically switch between

different wavelengths simultaneously in the same optical fiber. 3. CWDM (coarse Wavelength Division Multiplexing) and DWDM (Dense Wavelength Division Multiplexing) The design of the communication system varies with the interval width of each wavelength. Based on the channel interval, WDM can be subdivided into CWDM (coarse Wavelength Division Multiplexing) and DWDM (Dense Wavelength Division Multiplexing )

functions of IP networks, this greatly improves the QoS, routing, signaling, and other performance of the IP network communication, and achieves or approaches the statistical reuse of fixed-length group switching ATM. It is simpler, more efficient, cheaper, and more suitable than ATM. IETF is also focusing on new grouping management techniques to achieve QoS selection. The "tunneling technology" is being studied to achieve one-way link broadband transmission. In addition, how to select an IP ne

Insert_sql = insert_sql DWDM ", ' D1 " ', ' " T1 " ', ' " T2 ", --------------------------------------------------------------------------^ The minor error is also defined on the SQL statement, checking the pairing of quotes, single quotes, and so on. 4 Below is a browser-based online user registration process, the author in the use of some skills, dedicated to interested readers. ...... Set Conn = Server.CreateObject ("ADODB. Connection ") Conn.O

, line 86 Insert_sql = insert_sql DWDM ", ' D1 " ', ' " T1 " ', ' " T2 ", --------------------------------------------------------------------------^ The minor error is also defined on the SQL statement, checking the pairing of quotes, single quotes, and so on. 4 Below is a browser-based online user registration process, the author in the use of some skills, dedicated to interested readers....... Set Conn = Server.CreateObject ("ADODB. Connection

The explosive development of ip-based data Service brings unlimited demand for bandwidth, and dense wavelength division multiplexing (DWDM) system has incomparable networking advantages while satisfying the increasing bandwidth demand. In this paper, the key technologies are discussed. Key technologies of full optical networking for keywords dense wavelength division multiplexing (DWDM) WDM Optical Network

network equipment is mainly for TDM traffic, can only take advantage of the entire network of a part of the bandwidth, so once the user segment a large number of high-speed data access scheme (such as ADSL), will be due to the bandwidth convergence efficiency is very low or the application of excessive capacity of the transport backbone caused great pressure. At present, some operators are establishing and maintaining independent TDM, IP, ATM, Frame Relay network, resulting in a large amount of