OptiX OSN 9800 U64E TN11RAU2 TN12RAU2 Backward Raman and Erbium-doped Fiber Hybrid Optical Amplifier Unit

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.

Product Description

1.Product Overview

1.Basic information of the board

Attribute specification description

OptiX OSN 9800 series intelligent optical transmission platform

Board name: backward Raman and erbium-doped fiber hybrid optical amplification unit board (enhanced type)

Functional positioning integrates backward Raman amplification module and EDFA module to achieve low-noise amplification of C-band optical signals at the receiving end, significantly improving system performance, and adding enhanced functions such as line fiber quality monitoring and FCD

Board type: Hybrid Optical Amplification Processing Board (RAU2)

Adaptation subrack OSN 9800 universal platform subrack

Initial software version V100R006C00

Front panel dimensions: height x width x depth: 264.6 mm x 25.4 mm x 220 mm

Weight approximately 1.2 kg

Typical power consumption 35 W (typical value)

Maximum power consumption of 40 W (normal operation at maximum ambient temperature)

Working temperature -5°C to+55°C

Key features include backward Raman+EDFA hybrid amplification, C-band support, adjustable gain (up to 41dB), line fiber quality monitoring, FCD function, fast turn off/safe start of Raman laser, dual online monitoring ports, multiple working modes, transient control, front panel interlock switch

2.Interface specifications

Interface Identification Interface Type Quantity Function Description

LINE LC/UPC 1 line side port, connected to fiber optic line

SYS IN/SYS OUT LC/UPC 2 system side input/output ports, connected to splitters or other units

MON1/MON2 LC/UPC 2 high-precision online monitoring port, can be connected to an external spectral analyzer or OPM unit, real-time monitoring of signal spectra, optical power, OSNR and other parameters

FCD button/indicator light 1 front panel FCD (fiber optic connector cleaning detection) button and indicator light, used to detect the cleanliness of the fiber optic connector end face

Interlock switch mechanical switch 1 front panel interlock switch, used to control the on/off of Raman laser pump to ensure safe operation

3.Core functional characteristics

Functional Module Technical Description System Value

The hybrid amplification technology integrates backward Raman module and EDFA module to perform distributed+centralized amplification on C-band optical signals.Compared with pure EDFA, it can significantly improve the system OSNR and achieve longer distance and wider bandwidth transmission

Adjustable gain supports continuous adjustment of gain based on signal power, with different gain ranges for different fiber types (30-41dB for G.652, 27-37dB for G.654B, 32-43dB for LEAF, etc.), flexibly adapting to various fiber types and transmission needs across different spans

New function for monitoring the quality of line fiber optic cables, which can monitor the attenuation, reflection and other quality parameters of line fiber optic cables in real time to assist in judging the health status of fiber optic links and warning potential faults in advance

The FCD function front panel integrates FCD buttons and indicator lights, which can detect the cleanliness of the fiber optic connector end face, determine whether cleaning is needed, simplify operation and maintenance, and avoid performance degradation caused by connector contamination

The Raman laser has added a fast shutdown function, which can automatically shut down the Raman laser within milliseconds when dangerous reflections are detected, improving operational safety and protecting equipment and personnel

Raman laser safety activation adds safety activation logic to ensure that the Raman laser can only be activated when the fiber connection is correct and there is no dangerous reflection, in order to prevent laser leakage caused by misoperation

Online optical performance monitoring provides 2 high-precision online monitoring ports, which can be connected to an external spectral analyzer for real-time monitoring of signal performance without interrupting business for optical layer performance diagnosis and optimization, greatly improving operation and maintenance efficiency

The Raman module supports three modes of operation: gain locking, maximum gain, and pump power;The EDFA module supports flexible adaptation of gain locking and power locking modes to different application scenarios: gain locking is suitable for multi span systems, maximum gain is suitable for ultra long single span, and pump power mode is suitable for special optical fibers

The built-in EDFA for transient control has transient control function, which suppresses signal power fluctuations during channel loading and unloading, supports smooth upgrading and expansion, and ensures business stability

Real time detection of pump drive current, back current, cooling current, pump temperature, and board ambient temperature through alarm and performance monitoring;EDFA module detects and reports optical power;The Raman module supports return loss detection to comprehensively monitor the health of equipment and warn potential faults

4.Optical performance parameters

Table 1: Gain Range under Different Fiber Types

Fiber type gain range

G.652     30 dB ~ 41 dB

G.654A   30 dB ~ 41 dB

G.654B   27 dB ~ 37 dB

LEAF / G.653 / TWRS / TW-C / TWPLUS / SMFLS / G.656 / TERA_LIGHT  32 dB ~ 43 dB

Table 2: General Optical Indicators

Parameter specification remarks

Working wavelength range: 1529 nm -1561 nm in the C-band

Amplification method: backward Raman+EDFA hybrid amplification, distributed+centralized amplification

Two online monitoring ports (MON1/MON2) with a typical coupling ratio of -20 dB

Working mode (Raman) gain locking/maximum gain/configurable pump power

Working mode (EDFA) gain lock/power lock default gain lock

Transient control supports suppressing power fluctuations during channel up and down connections

The wavelength of the pump laser is approximately 1425-1465 nm in the Raman pump band

Raman pump output power up to 800 mW adjustable

The overall noise figure is better than -2 dB (equivalent noise figure) for Raman+EDFA joint optimization

Return loss (all ports) ≥ 45 dB Excellent return loss characteristics

5.Detailed explanation of working mode

Description of applicable scenarios for working mode

Gain locked mode (Raman) for multi span or single short span systems using fibers such as G.652, G.653, LEAF, etc.The Raman module gain can be adjusted and the actual gain can be queried

The maximum gain mode (Raman) uses ultra long single span system Raman modules such as G.652, G.653, LEAF fibers to automatically adjust the pump power to achieve maximum gain, and the actual gain can be queried

Pump power mode (Raman) uses other types of optical fibers, or in scenarios where manual adjustment of pump power is required, it is suitable for special optical fibers or testing

Gain Locked Mode (EDFA) default mode, suitable for multi span systems.EDFA gain is adjustable and the actual gain can be queried

Power Locked Mode (EDFA) engineering debugging and fault location maintain a constant output power for link budget verification

6.Comparison with TN11RAU2

Characteristics TN11RAU2 TN12RAU2

Line fiber quality monitoring is unsupported

FCD function not supported (front panel buttons/indicator lights)

Raman laser fast shutdown unsupported

Raman laser safe activation without support

Front panel interlock switch not supported

Initial software version V100R001C01 V100R006C00

The replacement relationship can be replaced by TN12RAU2, but if created as 11RAU2, it only has basic functions-

7.Application scenarios

Core Value of Application Scenario Deployment Method

The ultra long distance trunk receiving end serves as a pre mixed amplifier at the OTM station, which significantly improves the reception OSNR by low-noise amplification and mixed amplification technology for weak signals, supporting longer transmission distances

The multi span system adopts gain locking mode to compensate for the accumulated loss of multiple spans.Gain locking ensures stable performance of each channel

The ultra long single span system adopts the maximum gain mode to maximize amplification capability and break through the limit of single span transmission distance

Fiber quality sensitive scenarios utilize the line fiber quality monitoring function to monitor fiber attenuation, reflection, and other factors in real-time, providing early warning of fiber degradation and avoiding business interruptions

Nodes with high security requirements utilize quick shutdown and secure activation functions to enhance the safety of laser operations, protect maintenance personnel, and ensure the safety of equipment

To be used in conjunction with the FIU board, it is necessary to use it in conjunction with TN14FIU or TN16FIU to ensure correct optical path connection and optimal performance

8.Safety and operational precautions

Notes on Precautions

Before inserting/unplugging optical fibers from the RAU2 board, the Raman laser pump must be turned off using the front panel interlock switch or network management

The EDFA and Raman optical module of the RAU2 board can only be connected to the FIU board, and cannot be connected to any other board

Pressing the FCD button can activate the cleanliness check, and determine whether the connector needs to be cleaned based on the indicator light

Laser safety level: This board includes Class 1M lasers, and relevant safety regulations must be followed during operation

9.Maintenance and ordering information

Project Information

Component code TN12RAU2 (specific version such as TN12RAU201, etc.)

Ordering instructions: When placing an order, it is necessary to confirm the fiber type to determine the applicable gain range

On site operation supports hot plugging, and strict adherence to laser safety regulations is required during operation.The Raman laser should be turned off before plugging in and unplugging the fiber

After testing and verifying installation, gain calibration, power testing, monitoring function verification, and FCD function testing are required

As a core board for ultra long distance transmission, spare parts management is recommended to be configured at critical nodes

Software dependency requires support from the host software version (V100R006C00 and above)

Core Summary:

TN12RAU2 is an enhanced receiving end optical amplifier board in the OSN 9800 platform that uses a hybrid amplification technology of backward Raman and EDFA.It adds line fiber quality monitoring FCD, The Raman laser has multiple functions such as fast shutdown/safe startup, front panel interlock switch, etc., which significantly improve the convenience and safety of operation and maintenance.Its gain range varies depending on the fiber type (30-41dB under G.652, 27-37dB under G.654B, 32-43dB under LEAF, etc.), supporting multiple working modes such as gain locking, maximum gain, and pump power, and can flexibly adapt to different application scenarios such as multi span and ultra long single span.

Core values and positioning:

Hybrid amplification technology: Raman+EDFA integration, significantly improving the OSNR of the receiving end.

New intelligent operation and maintenance functions: line fiber quality monitoring, FCD function, simplifying fault diagnosis.

Enhanced security: Raman laser can be quickly turned off/safely turned on, front panel interlock switch can be used to protect personnel and equipment.

High gain capability: up to 43dB gain (LEAF and other optical fibers), supporting ultra long distance transmission.

Dual online monitoring: 2 MON ports, supporting uninterrupted business optical performance monitoring.

Application suggestion:

This board is suitable for scenarios such as C-band backbone networks and submarine cable systems that require extremely high receiving sensitivity, ultra long transmission distance, and high security requirements. During deployment, it is necessary to select the appropriate gain range based on the type of fiber and strictly follow safety operating procedures. For existing TN11RAU2 networks, TN12RAU2 can be gradually replaced to obtain enhanced functionality; If only basic functions are required, it can be configured to run TN11RAU2 in the network management.