DWDM Optical Transmission WSMD4 4-Port Wavelength Selective Multiplexing and Demultiplexing Board TN12WSMD4---OSN 8800 WDM

Yantai Boxin International Trading Co., Ltd. is a professional comprehensive trading service provider for communication equipment.With warehouses established in Yantai and Hong Kong, we have built a complete and localized network for delivering communication products and services.In 2018, Yantai Boxin International Trading Co., Ltd. set up its international sales department in Yantai, China.Based in China, we operate in emerging markets across Southeast Asia, India, the Middle East, Africa, Europe, and the United States. 

Yantai Boxin International Trading Co., Ltd. supplies products to various telecom operators, meeting their needs for supplementing and expanding 2G/3G/4G/5G network stations.Our current equipment portfolio covers brands such as Nokia, Ericsson, Alcatel, Huawei, ZTE, ZTT, and FiberHome. 

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

Board name: 4-way wavelength selection switch combiner board (enhanced type)

Functional positioning enables multi wavelength signal multiplexing and dynamic routing in four line directions, supports direction independent wavelength scheduling, enhances flexible grids, and extends the C+band

Board type: Optical layer wavelength selection switch, combiner board

Compatible with subracks such as OSN 9800 U series/M series that support TN series cards

Front panel dimensions: height x width x depth: 264.6 mm x 76.2 mm x 220 mm

Weight 3.2 kg

Typical power consumption 26.0 W

Maximum power consumption of 28.5 W (normal operation at maximum ambient temperature)

Working temperature -5°C to+55°C

Key Features: 4-Direction Wavelength Scheduling, Extended C+Band Support, Flexible Grid (6.25GHz Slice), VOA Attenuation Adjustment per Wavelength (0-20dB), Online Optical Performance Monitoring, Optical Layer ASON Support, Enhanced Isolation

2.Interface and Port Definition

Interface Identification Interface Type Quantity Function Description

COM LC/UPC 1 public port, connected to local business or multiplexing units

LINE1~LINE4 LC/UPC 4 line direction ports, respectively connected to 4 different directions of line optical fibers

MON1/MON2 LC/UPC 2 online monitoring port, which can be connected to a spectral analyzer or spectral analysis unit to monitor signal performance without affecting business operations

EXP LC/UPC 1 expansion port, used for cascading or expanding applications (such as connecting to another WSS board)

3.Core functional characteristics

Functional Module Technical Description System Value

Direction independent wavelength scheduling supports dynamically routing local business wavelengths to any one or more line directions, or combining wavelengths from different line directions to a common port to achieve direction independent flexible wavelength scheduling.It is the core component for building colorless, non directional, and non blocking ROADM nodes

Enhanced flexible grid support supports flexible grid adjustment with a minimum slice granularity of 6.25GHz, in compliance with the latest ITU-T G.694.1 standard.Each channel can continuously occupy 2-96 slices (6.25 * n GHz, n=2-96) to achieve extremely fine spectrum management, perfectly adapting to various rate services ranging from 100G to 1.6T, maximizing spectrum efficiency

Extended C+band supports working wavelength range coverage.Extended C+band (1524.50 nm -1572.06 nm) supports DWDM systems with 120 waves @ 50GHz or higher density, meeting future high-capacity transmission needs

Each wavelength VOA adjustment supports independent attenuation adjustment of 0-20dB for each routing wavelength, with a step size of 0.1dB to achieve fine adjustment of routing power, optimize nonlinear effects, balance channel performance, and improve system OSNR margin

Online optical performance monitoring provides 2 high-precision online monitoring ports, which can be connected to an external spectral analyzer to monitor signal spectra, optical power, OSNR 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, VOA status, wavelength locking status, and reporting of rich alarms and performance events for rapid fault location, achieving preventive maintenance

Optical layer ASON supports automatic switching of optical network functions and has GMPLS control plane interfaces to provide basic support for intelligent optical networks, achieving automated wavelength level business scheduling and protection

4.Optical performance parameters

Table 1: Optical Performance Parameters of TN12WSMD4 (Flexible Grid Mode, 6.25GHz Slice)

Parameter condition specification remarks

Working wavelength range: all ports 1524.50 nm -1572.06 nm Extended C+band, supporting Super C+evolution

Channel spacing -6.25 * n GHz (n=2~96) flexible grid, with 6.25GHz as the minimum slice unit, each channel can continuously occupy 2~96 slices

-1dB spectral width ->2 * (3.125n-6.25) GHz n is the number of consecutive occupied slices, n=2~96

Insertion loss COM↔Insertion loss between LINE1-4 ≤7.5 dB common port and any line direction port (VOA=0dB)

Maximum channel insertion loss difference ≤ 1.2 dB between each line direction to ensure power balance in all directions

Port isolation between adjacent channels>28 dB to suppress adjacent channel crosstalk

Port isolation>35 dB for non adjacent channels provides higher isolation

Directionality -40 dB to prevent reverse light interference

Each wavelength attenuation range is independently adjustable from 0-20 dB for each routing wavelength, with a step size of 0.1dB

Attenuation adjustment accuracy 0~10dB range ≤ 0.5 dB High precision adjustment within low attenuation range

Attenuation adjustment accuracy 10-20dB range ≤ 1.0 dB High attenuation range ensures performance

Reconfigure time - ≤ 2 seconds wavelength scheduling response time

Maximum reflectivity -45 dB for all ports with excellent return loss characteristics, reducing reflection

Polarization related loss ≤ 0.5 dB for all ports, friendly to high-speed modulation signals

The coupling ratio of the monitoring port to MON1/MON2 is about -20 dB ± 0.5 dB, which does not affect the main optical channel and provides high-precision coupling

Table 2: Optical Performance Parameters of TN12WSMD4 (Fixed Grid Mode, 50GHz)

Parameter condition specification remarks

Number of optical channels -96 supports 96 waves @ 50GHz DWDM system

Adjacent channel spacing -50 GHz ITU-T standard grid

-1dB spectral width ->25 GHz ensures signal transmission

Insertion loss COM↔Insertion loss between LINE1-4 ≤7.5 dB common port and any line direction port (VOA=0dB)

Port isolation between adjacent channels>28 dB to suppress adjacent channel crosstalk

Port isolation>35 dB for non adjacent channels provides higher isolation

5.Power consumption and mechanical parameters

Parameter specifications

Typical power consumption 26.0 W

Maximum power consumption of 28.5 W (normal operation at maximum ambient temperature)

Front panel dimensions 264.6 mm (height) x 76.2 mm (width) x 220 mm (depth)

Weight 3.2 kg

Working temperature -5°C to+55°C

Storage temperature -40°C to+70°C

6.Comparison with TN11WSMD4

Features TN11WSMD4 TN12WSMD4

Extended working wavelength range: C-band (1528.8-1567.6nm) Extended C+band (1524.5-1572.06nm)

Slice granularity 50GHz 6.25GHz

Maximum number of slices occupied 8 96

Supports a maximum speed of 400G and 1.6T

VOA dynamic range 0-15 dB 0-20 dB

VOA Step 1 dB 0.1 dB

Insertion loss ? 8.0 dB ? 7.5 dB

Port isolation (adjacent)>25 dB>28 dB

Typical power consumption 25.0 W 26.0 W

7.Application scenarios

Core Value of Application Scenario Deployment Method

The next generation of 4-directional ROADM nodes are deployed in urban core or backbone nodes that require 4 line directions.As the core wavelength routing unit, they provide direction independent flexible wavelength scheduling, supporting any wavelength to be added/removed from any port.The 6.25GHz fine grid supports a 1.6T ultra high speed rate

Deploy over 100G trunk branching nodes at the branching points of the trunk network to achieve 400G/800G business scheduling between the trunk and branch lines in 4 directions, perfectly matching the requirements of branching nodes, supporting primary and backup routing and business guidance

Optical layer ASON intelligent network serves as a programmable routing unit in networks that require optical layer intelligence features.Optical layer ASON supports automated business scheduling and protection, reducing operation and maintenance costs

Deploying high-density systems in the extended C+band network supporting 120 waves @ 50GHz, covering the full band of 1524.5-1572.06nm, to meet the demand for high-capacity transmission in the next 10 years

The hybrid rate network (100G-1.6T) deploys flexible grids to support the bandwidth requirements of different rate services in networks that require simultaneous support of 100G/200G/400G/800G/1.6T services, maximizing spectrum utilization efficiency

The data center interconnection hub is deployed at large DCI aggregation points, connecting multiple data center directions to provide high-density and flexible grid wavelength scheduling capabilities, adapting to future bandwidth growth

8.Maintenance and ordering information

Project Information

Component code TN12WSMD4

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 plugging, and anti-static wrist straps should be worn during operation.Pay attention to cleaning the fiber optic connectors

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

Two monitoring ports can be used to connect to a spectral analyzer for real-time monitoring of output spectra

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

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

Warranty service standard: Warranty period of 1 year, expandable

Core Summary:

TN12WSMD4 is an enhanced wavelength selective switch combiner designed specifically for 4-directional ROADM nodes on the OSN 9800 platform.Based on TN11WSMD4, it has achieved three core upgrades: 6.25GHz fine flexible grid, extended C+band, and 20dB VOA dynamic range.It is a key component for building future oriented flexible optical networks with over 100G/400G/800G/1.6T capabilities.

Core values and positioning:

Ultimate Spectrum Efficiency: 6.25GHz minimum slice granularity, supports fine spectrum allocation for any rate business from 100G to 1.6T, and can improve spectrum efficiency by more than 50% compared to 50GHz fixed grid.

Ultra large capacity support: Expand C+band coverage to 1524.5-1572.06nm, supporting 120 wave @ 50GHz systems to meet bandwidth growth needs in the next decade.

Refined power management: 0-20dB VOA range, 0.1dB step, achieving industry-leading precise control of routing power, significantly improving system OSNR margin.

Direction independent flexible scheduling: The 4-direction design perfectly matches scenarios such as urban core and trunk branching, supporting routing in any wavelength and direction.

Intelligent operation and maintenance ready: high-precision online monitoring, optical layer ASON support, laying the foundation for all-optical autonomous driving networks.

Application suggestion:

This board is the core routing component of the OSN 9800 wavelength division system for 4-directional ultra 100G flexible grid networks, particularly suitable for scenarios that require fine spectrum management, ultra large capacity, and multi rate mixed transmission, such as backbone network branching nodes, large metropolitan area cores, data center interconnection hubs, etc. 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. For traditional fixed grid networks, TN11WSMD4 or TN11RMU9 are more cost-effective choices.