OSN8800 DWSS20 TN51DWSS20 Dual 20-Port Wavelength Selective Switching Multiplexing and Demultiplexing Board(C-band)

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We expand our international market share by offering high-quality products, excellent service, competitive pricing, and timely delivery.Feel free to contact us for more information.

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1.Product Overview

1.Basic information of the board

Attribute specification description

OptiX OSN 9800 series intelligent optical transmission platform (compatible with OSN 8800)

Board name: 20 port wavelength selection switch, combination/division board

Functional positioning is combined with optical multiplexing/demultiplexing units to achieve wavelength level dynamic scheduling and guidance in DWDM network nodes

Type of board: Optical layer wavelength selection switch, combination/division board

Adaptation subrack OSN 9800 universal platform subrack: IU1-IU15 (occupying 2 slots)

OSN 8800 T64/T32/T16 subrack: supports specified slot positions

Occupy 2 slots (located on the left side of the sub rack)

Weight 2.5 kg

Typical power consumption 24.0 W

Maximum power consumption 36.0 W (normal operation at maximum ambient temperature)

Working temperature -5°C to+55°C

Key features: 20 port dynamic wavelength scheduling, 96 wavelength support, extended C-band, 6.25GHz flexible grid, VOA attenuation adjustment per wavelength (0-15dB), online optical performance monitoring, optical layer ASON support

2.Interface and Port Definition

Interface Identification Interface Type Quantity Function Description

AM1~AM20 LC/UPC 20 uplink port, can add any wavelength from any direction through this port and output from the OUT port

OUT LC/UPC 1 common output port, outputting multiplexed multi wavelength signals to the line side

IN LC/UPC 1 line input port, receiving multiplexed signals from the main optical path

DM1~DM20 LC/UPC 20 downstream port, from any direction of wavelength in the input signal downstream to the local receiver

3.Core functional characteristics

Functional Module Technical Description System Value

Dynamic wavelength routing supports adding any wavelength from AM1 to AM20 ports, and achieves direction independent flexible wavelength routing scheduling through OUT port output.It is the core component for building colorless and directionless ROADM nodes

The dynamic wavelength downlink receives the main optical path signal through the IN port, and the wavelength in any direction is downlink to the DM1 to DM20 ports, supporting flexible downlink configuration to meet the local reception requirements of multi-directional services

Flexible grid supports a minimum slice unit of 6.25GHz, and each channel can continuously occupy 6-64 slices (6.25 * n GHz, n=6-64) to meet the transmission requirements of mixed rate services ranging from 100G to 400G/800G, maximizing spectrum utilization efficiency

96 wavelength support supports 96 wavelength DWDM systems, working in the extended C-band to meet the requirements of high-density wavelength division systems, fully compatible with mainstream DWDM systems

Each wavelength VOA adjustment supports independent attenuation adjustment of 0-15dB for each on road wavelength to achieve fine adjustment of on road power, optimize nonlinear effects, and balance the performance of each channel

Online optical performance monitoring supports online monitoring function, which can monitor signal spectrum, optical power and other parameters in real time without interrupting business for optical layer performance diagnosis and optimization, greatly improving operation and maintenance efficiency

Alarm and performance event monitoring: Real time detection of optical power and reporting of board related alarms and performance events for rapid fault location, achieving preventive maintenance

Optical layer ASON supports automatic switching of optical layers, providing basic support for intelligent optical networks and achieving automated wavelength level business scheduling and protection

4.Optical performance parameters

Table 1: Flexible Grid Parameters

Parameter Unit Specification Remarks

Minimum Slice Width GHz 6.25 Flexible Grid Minimum Adjustment Unit

Total number of slices -772 covering the full range of extended C-band

The number of slices occupied by each channel is -6~64, which can be continuously occupied, n=6~64

Center frequency per slice THz 191.253125+(m-1) � 0.00625 m=1-772

Channel bandwidth GHz n × 6.25 n is the number of slices continuously occupied

Table 2: Optical Channel Performance Parameters

Parameter Port/Condition Specification Remarks

All ports within the working wavelength range are extended to the C-band, supporting a 96 wavelength system

Insertion loss AMx → OUT ≤ 8.0 dB Loss from the input port to the output port

Insertion loss IN →DMx ≤ 8.0 dB Loss from input to downstream port

Maximum channel insertion loss difference ≤ 2.5 dB between channels to ensure power balance among channels

Port isolation between adjacent/non adjacent>25 dB to suppress inter channel crosstalk

Extinction ratio - ≥ 35 dB -

Directionality -30 dB to prevent reverse light interference

Reconfigure time - ≤ 3 seconds wavelength scheduling response time

Maximum reflectivity -30 dB return loss characteristic for all ports

Table 3: On road wavelength attenuation adjustment parameters

Parameter specification remarks

The attenuation range of each wavelength is 0-15 dB, and each on road wavelength is independently adjustable

Attenuation adjustment accuracy ≤ 1 dB (0~10dB range) High precision adjustment within low attenuation range

Attenuation adjustment accuracy ≤ 1.5 dB (>10dB range) ensures performance within high attenuation range

5.Power consumption and mechanical parameters

Parameter specifications

Typical power consumption 24.0 W

Maximum power consumption 36.0 W (normal operation at maximum ambient temperature)

Weight 2.5 kg

Occupy 2 slots

Working temperature -5°C to+55°C

Storage temperature -40°C to+70°C

6.Compatible with subrack and slot requirements

Subrack types support slot positions

OptiX OSN 9800 universal platform subrack IU1-IU15 (occupying 2 slots, located on the left side of the subrack)

OptiX OSN 8800 T64 subrack IU1-IU7, IU11-IU17, IU19-IU25, IU27- IU33, IU35-IU41, IU45-IU51, IU53-IU59, IU61-IU67

OptiX OSN 8800 T32 subracks IU1-IU7, IU12-IU18, IU20-IU26, IU29-IU35

OptiX OSN 8800 T16 subrack IU1-IU7, IU11-IU17

OptiX OSN 8800 universal platform subrack IU1-IU15

OptiX OSN 6800 subrack IU1-IU16

7.Application scenarios

Core Value of Application Scenario Deployment Method

As the core wavelength routing unit of ROADM nodes, large-scale ROADM nodes work together with multiplexing/demultiplexing units to achieve dynamic wavelength scheduling and support high-density scheduling of 20 ports, meeting the needs of multi-directional business aggregation and offloading

Flexible grid DWDM network deploys 6.25GHz fine grid to support bandwidth requirements of different rate services at nodes that require simultaneous support of mixed rate services such as 100G/200G/400G, maximizing spectrum utilization efficiency

The 96 wavelength high-density system serves as the core scheduling unit in the extended C-band 96 wavelength DWDM system, supporting 96 wave @ 50GHz high-density systems to meet high-capacity transmission requirements

Optical layer ASON intelligent network serves as a schedulable unit in networks that require optical layer intelligence features.Optical layer ASON supports automated business scheduling and protection

The online performance monitoring point utilizes the online monitoring function of the board to connect to the optical performance monitoring unit (OPM) for real-time monitoring of channel power and spectrum, achieving visualization of the optical layer

8.Maintenance and ordering information

Project Information

Component code TN51DWSS20

The initial software version supports OSN 9800: V100R005C10; OSN 8800: V100R012C00

Ordering instructions: When placing an order, it is necessary to confirm the working band (extended C-band) and flexible grid configuration requirements

On-site operation supports hot-swapping, occupying 2 slots.An anti-static wrist strap should be worn during operation, and attention should be paid to cleaning the fiber optic connector

After the installation of VOA configuration, VOA attenuation calibration needs to be performed through the network management to ensure control accuracy

The monitoring port uses the online monitoring function of the board to connect to the spectral analyzer and monitor the output spectrum in real time

After testing and verifying installation, insertion loss testing, port connectivity testing, wavelength scheduling function verification, VOA function verification, and grid configuration verification are required

Spare parts management, as the core board of large-scale ROADM nodes, is recommended to configure spare parts at critical network nodes

Core Summary:

TN51DWSS20 is a 20 port wavelength selective switch splitter for large-scale ROADM nodes in the OSN 9800/8800 platform, providing dynamic wavelength scheduling capabilities for 20 uplink and 20 downlink ports.It is the core component for building large-scale, multi-directional, and flexible grid all-optical networks.

Core values and positioning:

High density wavelength scheduling core: The 20 port design supports 96 wavelength extended C-band systems, meeting the needs of large-scale business aggregation and diversion.

Flexible grid support: 6.25GHz minimum slice granularity, supporting fine spectrum allocation for any rate business from 100G to 400G/800G, significantly improving spectrum utilization efficiency.

Low insertion loss and high performance: On/off insertion loss ≤ 8.0dB, isolation>25dB, providing high-quality channels for high-speed signal transmission.

Refined power management: Each wavelength has independent 0-15dB VOA adjustment, which can remotely and accurately adjust routing power to optimize system performance.

Intelligent operation and maintenance support: Provides online monitoring functions and optical layer ASON support, laying the foundation for intelligent optical networks.

Application suggestion:

This board is the core routing component for large-scale ROADM networks in the OSN 9800 wavelength division system, and is particularly suitable for scenarios that require high-density wavelength scheduling, flexible grid support, and extended C-band 96 wavelength capacity, such as backbone network core nodes, multi-directional business hubs, and large-scale data center interconnection. When deploying, it is necessary to combine the iMaster NCE intelligent control system to achieve automated operation and maintenance of the optical layer and dynamic management of spectrum resources.