With the rapid development of industry’s informatization, the demand in long distance and large capacity broadband has increased rapidly, resulting in the rapid growth in the traffic of the access layer, metropolitan area layer and backbone network. The dependence on the broadband rent or optical fiber direct-connection can no longer meet the need of industrial clients. Therefore, based on the existing service requirements, the OTN1000 series optical transmission network system is designed to meet the demand of future network development, which creatively expands the WDM technology from the backbone network to the metropolitan area and access layer. It provides a reliable, flexible and efficient high broadband carrying solution for the operators, Broadcast and TV, IDC, finance, government, cloud service, massive data and other industries.

OTN1000 Optical Transmission network system

The integrated C/DWDM platform of the optical transmission network system OTN1000 A is mainly used in the metropolitan area access layer network. It can complete the functions such as optical fiber saving, service multiplexing and distance extension. It can also solve the shortage of fiber resources in the access layer network and provide clients a good solution of broadband multiple service access with low cost and high efficiency. OTN1000 A can cooperate with other OTNS series products and build networks according to different requirements.

OTN1000 is located in metropolitan area network


Save optical fiber in huge bandwidth need

Applications of WDM in single fiber bidirectional transmission

Scene Description:

Due to the absence of their own optical fibers, the interconnection between government centers and enterprise parks mainly adopts the way of broadband renting currently. But as the growth of the broadband requirements, the demand of renting the bare fiber for self-built wavelength division load network have increased. In order to further save network construction costs, a new solution is proposed to construct large-capacity wavelength division based on the single fiber bidirectional technology.

Case study: the interconnection between government centers, single fiber bidirectional wavelength division transmission network

Highlights in the Solution:

  1. Single fiber system supports 10G transmission, which makes a good solution to the contradiction between optical fiber and broadband;
  2. It supports 100M~10G full-service access;
  3. Physical isolation between the services, and dedicated network for special purpose;
  4. Metro fiber cable loss is generally high and the system can be configured with optical amplification to solve the problems of long distance transmission and fiber loss;
  5. 1U equipment can meet the service requirements, because it’s flexible, plug-and-play, free-of-configuration and maintenance free.

Applications of WDM transmission networks for disaster tolerance backup

Scene description:

With the construction of the data center construction for private network clients from such as cloud network, IDC and big enterprises, the demand for the disaster tolerance backup system demand is increasing. Clients choose the self-built wavelength division method to solve the contradiction between the fiber and large broadband which not only can improve network reliability by “private network for special purpose” but also achieve high-broadband service transmission and even meet the flexible extension of long-term service.

Case study: wavelength division transmission network of enterprise disaster tolerance backup (1+1 hot standby)

Highlights in the Solution:

  1. The most comprehensive IP and SAN service interface, which supports almost all of the IP and SAN services at present;
  2. The scope of disaster backup expands to 130 km, meeting the demand of the large volume of disaster backup for multiple physical nodes;
  3. 1+1 backup protection for wavelength division hardware and line achieves the highest network protection.

Applications of OTN transmission bandwidth cloud

Scene description:

With deepening of informatization in the industry, larger-particle Ethernet services have been gradually rising, which leads to the fast growth of the traffic in the access layer, metro area layer and backbone network. Therefore, the construction of the multiple service transmission platform and the provision of high capacity channel has become a new development direction for the transmission network technology. The solution of “OTN transmission broadband cloud” is just born for this. The “OTN transmission broadband Cloud” is a blend of advanced technology of 10G~100G and large capacity OTN photoelectric cross. Just like the “cloud computing”, it has formed a large-capacity, dynamic shared, quickly accessible, intelligent and reliable network.

Highlights in the Solution:

  1. Construct the large volume pipe with the 100G technology, and allow the entire network to share 100G broadband channel via OTN technology at the same time;
  2. Meet the scheduling demand for large capacity and flexible network, support 40->80 wave or 10G->100G modular expansion, ensure the network to smoothly upgrade to 8T massive transfer, which not only saves the initial investment but also satisfies the future network development for many years;
  3. OTN transmission broadband cloud solves the industry various clients’ challenges in the industry planning, construction, maintenance and other aspects and brings the client a experience of “zero waste large broadband, rapid release and zero waiting, and zero service interruption”
  4. Unified management, intelligent network management, real-time monitoring of network running status all guarantee the stability of the network.

Applications of WDM unidirectional transmission network

Scene description:

Big data era is formally arriving with the development and popularity of the age of the Internet, the core of the construction of the cloud services based on large data is to conduct data collection and analysis in order to show the value of the data. Because of the network various sources and huge amount of the data, the large-scale network data analysis platform is usually established in equipment room in non-local locations. The WDM unidirectional transmission solution can provide real-time, reliable, safe and stable data transmission for non-local network data analysis platform.


Highlights in the Solution:

  1. It supports 100M~100G full-service access, all types of services can access system, and they are all transmitted on a single fiber by multiplexing;
  2. It supports the transmission upon the expansion from 40 wavelength to 80 wavelength or the convergence from 10G to 100G, which maximizes the use of fiber core and channel resources;
  3. Network transmission signals and service signals are jointly transmitted to the pretreatment equipment room, so as to realize a unified network for the entire network equipment.

Applications of optical amplification

Scene description:

With the development of the network security technology, currently, in many key links of the optical fiber network, there will be many security systems which require the traffic on this link; the image and copy for the optical data links in the industry basically adopts the optical splitting approach as a solution, so as to ensure the reasonable traffic collection under the condition of not affecting the original link transmission. The copying link which has gone through the optical splitting approach can amplify the signal with the optical amplifier, so as to guarantee to provide more high quality data flow for the security management platform. The OTN1000 amplification platform has characteristics of compact structure, flexible configuration and low power consumption and it supports the optical amplification for full modes of 100M~100G as well as for full rates, which are widely applied to the fields of operators, private networks and information.


Highlights in the Solution:

  1. It supports optical amplification for SDH/SONET services at various rate levels and services such as POS, GE, 10 GE, 40 GE and 100 GE, which can be adaptive to any scene.
  2. High level of integration:1U platform can support the amplification for 155M~10G signals of up to 16 links (including a total of 32 channels uplink and downlink) or the amplification for 100G signals of up to 4 links (including a total of 8 channels uplink and downlink).

2U platform can support the amplification for 155M~10G signals of up to 32 links (including a total of 64 channels uplink and downlink) or the amplification for 100G signals of up to 8 links (including a total of 16 channels uplink and downlink).

5U platform can support the amplification for 155M~10G signals of up to 72 links (including a total of 144channels uplink and downlink) or the amplification for 100G signals of up to 18 links (including a total of 36 channels uplink and downlink).

OLP line protection applications

Scene description:

Optical line protection (OLP) technology is a kind of simple, flexible, economic and practical means of protection, which can effectively decrease the times of interruption of optical transmission system and has had a large number of applications in the first- and second-level DWDM transmission systems.

1+1 protection way:


t’s a hot standby mechanism of double transmitter or receiver and single-end rearrangement where OLP transmitter will split the signal into two parts at the same time to transmit them to the optical fiber of working and protection line, the OLP receiver inspects and compares the optical power of the signals in the working and protection line and then select the superior signal from one of two channels through optical switch.

1:1 protection way:

The OLP transmitting end and receiving end are linkage optical switches. During normal working, the switch selects the line of the service channel for the optical signal transmission, and the line of protection line is used for the monitoring of signal communication for OLP on both ends. During the rearrangement, automatic optical switch at the home end and remote end conducts an automatic negotiation and implements switch through protection channel line.

Highlights in the Solution:

  1. Applicable to arbitrary scene: used for all kinds of optical communication system and transparent transmission, having nothing to do with the line data, format and multiplex;
  2. Safe and reliable: OLP adopts the design of the advanced optical switch and high-quality passive splitter, with a high reliability; and it is independent from network management board, without affecting each other;
  3. Automatic switch function: automatically switch to the protection line when the optical fiber in the working channel line is blocked, so as to ensure no blocking for communication services;
  4. Monitoring features for line insertion loss: conduct a real-time monitoring on the status of line insertion loss in the non-working optical channels and send out alarm prompt according to established alarm threshold, so as to ensure the validity and reliability of the protection system;
  5. Function of keep running for the power off and on: no matter the OLP power is off or on, it does not affect the switch state of the main and standby routing and guarantees the normal working of the system; and it also has the hot plug function;
  6. Network management function: support various management methods such as SNMP, CLI, Telnet and Web, implement the real-time monitoring, configuration and management on the OLP equipment state and the routing line status;
  7. Fast response: Switching time of 1+1 protection <20ms, Switching time of 1:1 protection <40ms;
  8. Unified platform architecture: OLP can work with our EDFA optical amplification and DCF dispersion compensation in the same chassis, and provide a one-stop solution for the protection and transformation of the DWDM network.



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