The ZXMP M800 urban dense wavelength division device (hereinafter referred to as ZXMP M800) is developed by ZTE Corporation LimitedThe DWDM product developed by the company is suitable for high-capacity optical transmission and can fully meet the needs of users at different levelsNetworking and management requirements, capable of serving the construction of local and metropolitan core networks of various scales

The ZXMP M800 is divided into a hardware system and a network management software system, which are both relatively independent and work together

Hardware system architecture

In the hardware system of ZXMP M800, it includes optical forwarding platform, business aggregation platform, optical layer protection platformAdd/drop multiplexing/multiplexing platform, optical amplification platform, and monitoring platform.

Introduction to Platform Functions

1. Optical forwarding platform

Using the conversion method of light/electricity/light, the wavelength conversion between business signals and line signals is completed.

Business signals support SDH signals and data with STM-N (N=1, 4, 16, 64) rate standards

Business signal, customer side meets the G.957 recommendation requirements.

The signal on the line side meets the requirements of G.692.

2. Business aggregation platform

Concentrate multiple low rate signals onto one wavelength for transmission and complete the inverse process.

Low rate signals include standard STM-1, STM-4, STM-16, and GE (Gigabit Ethernet)

10 GE, Fiber Channel (FC), Fiber Optic Interconnection (FICON), Enterprise Systems Interconnection (ESCON)

Digital Video Broadcasting (DVB) signals.

The maximum speed on the line side is 12.5 Gbit/s.

3. Optical layer protection platform

Provide optical layer protection function for the system. Can provide dual fiber bidirectional channel 1+1 protection, dual fiber dual

Shared protection for channels, bidirectional multiplexing segment sharing protection for two fibers, cross ring protection, and 1+1 for chain networks

Channel protection, 1+1 multiplexing segment protection, and 1: N channel protection.

4. Add/drop multiplexing/multiplexing/multiplexing platform

(1) The add/drop multiplexing platform completes the wavelength add/drop and multiplexing functions of line optical signals, based on whether the up/down wavelength is correct

Fixed can be divided into fixed optical add/drop multiplexing equipment (FOADM) and configurable optical add/drop multiplexing equipment

（ROADM）。

(2) The multiplexing and splitting platform completes the multiplexing and splitting functions of line optical signals.

Multiplexing/multiplexing: coupling multiple optical signals of different wavelengths from the optical forwarding platform and business aggregation platform

Combine and output through a fiber optic cable.

Demultiplexing/Wavelength Division: Splitting the line optical signal from the optical amplification platform into different wavelength channels

Send them separately to different optical forwarding platforms and business aggregation platforms.

For transmission of wavelengths below 40 waves, the multiplexing and splitting of ZXMP M800 is achieved in the C-band

The road spacing is 100 GHz.

For the transmission of 80 waves, the multiplexing and splitting of ZXMP M800 is achieved in the C-band using optical comb filtering

Interleaver technology, with a path spacing of 50 GHz.

5. Optical amplification platform

Using optical amplification technology for power compensation of long-distance transmission optical signals, usually located after the multiplexing platform

In front of the splitter platform and in the middle of the transmission line.

6. Monitoring platform

(1) Collect, process, and report configuration, alarm, and performance information of various network management platforms.

(2) Accept commands issued by the network administrator and forward them to the destination board.

(3) Use the designated monitoring optical channel to transmit network management information. The wavelength of the monitoring channel is 1510 nm. supervise

The control channel rate supports 2 Mbit/s, 10 Mbit/s, and 100 Mbit/s. Among them, 10 Mbit/s and

100 Mbit/s belongs to the 100 M monitoring system.