400GBASE  QSFP-DD  ER4L
400GBASE  QSFP-DD  ER4L

400GBASE-ER4L QSFP-DD PAM4 1310nm 30km DOM Duplex LC SMF Optical Transceiver

TLP-QDD-400G-ER4L

QSFP-DD MSA compliant

4 LWDM lanes MUX/DEMUX design

Up to 30km transmission on single mode fiber (SMF) with built-in PFEC

Operating case temperature: 0 to 70oC

8x53.125Gb/s electrical interface (400GAUI-8)

Data Rate 106.25Gbps (PAM4) per channel.

Maximum power consumption 12W

Duplex LC connector

RoHS compliant

The 400GBASE-ER4L module, Duplex LC connector, up to 30km over parallel single-mode fiber with 400G KP4 FEC. It is compliant to IEEE 802.3bs protocol and 400GAUI-8, QSFP-DD MSA. The module converts 8 channels of 50Gb/s (PAM4) electrical input data into four LAN-WDM optical signals, multiplexed into one channel for 400Gb/s optical transmission. The 400 Gigabit Ethernet signal is carried over four LAN WDM wavelength grid wavelengths. Multiplexing and demultiplexing of the four wavelengths are managed within the device.It is suitable for Data Center, Enterprise networking.
Specification
[Form Factor],[QSFP-DD]|[Distance],[30km]|[Wavelength],[1310nm]|[Connector],[Duplex LC]|[Power Consumption],[≤12W]|[Transmitter],[EML]|[Receiver],[APD]|[Media],[SMF]|[Modulation (Electrical)],[8x50G-PAM4]|[Modulation (Optical)],[4x100G-PAM4]|[Case Temperature (℃)],[0~70°C (32 to 158°F)]|[Application],[Data center Interconnect, 400G Ethernet, InfiniBand interconnects, Enterprise networking]|
Design and Simulation


Scheme Design

Industry-standard approach using an edge-coupled external light source combined with solid waveguides — a unified optical design that scales across 200G, 400G, 800G and 1.6T product families.

Single-source 1:4 and 1:8 fan-out designs, including FR-4 compatible options, to shorten development cycles and simplify integration.

Unique in-module coupling, locking mechanisms and high/low-temperature compensation algorithms that establish the foundation for high yield, low-cost mass productions.


Simulation Analysis

End-to-end simulation and analysis: full optical-path optical simulation, thermal simulation, signal-integrity (SI) simulation and 3D structural analysis.

Engineering platform supports the productization of all-silicon-photonics solutions from 200G through 1.6T.

79 granted patents specifically for silicon-photonic solutions.


Processing and Manufacturing

Fully self-developed coupling automation equipment and tri-temperature test stands, enabling flexible monthly capacity allocation and high production yields.

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Production Process

Tanlink Optics Automated unmanned workshop


Step 1 Optical Engine Desigh & Production.

The optical engine is seen as the core optical component in a transceiver. The optical engine’s packaging and production are mainly achieved in automated production area through using COB (Chip on Board) technology, which comprises 3 key process: die bonding, wire bonding and coupling .



Step 2 Transceiver Assembly

All finished optical components need to be packaged in the transceiver housing.  This step is often finished in the manual production area.


.Step 3 Testing

In the test area of Tanlink's factory, each transceiver must be tested to make sure whether it is in line with the corresponding standard.  Additionally, each one must be determined whether it can resist extreme environments and circumstances. 




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Reliability Test


Temperature & Humidity Cycling Test  

Temperature & humidity cycling test is used for examining the ability of 

Tanlink's transceiver products to resist extremely low and extremely high temperatures and humidities.


Vibration Test

Vibration test is for determining whether our transceiver products can withstand

 various environment vibrations by simulating possible vibration environments encountered

 by the product in the process of transportation, installation and use. 




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Performance testing


Performance testing 

involves in a ser- ies of metrics including eye diagrams,  receiving sensitivity,extinction ratios, 

signal-to-noiseratio, bit error rate and spectrum test, etc.



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Compatebility Test

Before delivery, each transceiver will be tested in a simulated OEM environment to make sure our transceivers are fully compatible with OEM systems.


Test Equipment such as:

  • MGMT AIS800-64O  MGMT AIS800-64D

  • Mellanox SN2700

  • CISCO N9K-C93180YC

  • Cisco C8111 N9K-C93180YC-EX 

  • ARISTA 7050Q-16  DCS-7050CX3-32S-F DCS-7060DX4-32S-F

  • Nvidia QM9790  SN5600  CX7  QM8700 Quantum-X800 Q3400-RA 900-9X81E-00EX-STO MCX75310AAS-NEA  MCX715105AS-WEAT

  • DELL Z9432-ON (400G QDD)

  • Juniper QFX5220-32CD

  • Nokia 7250 IXR-e

  • Keysight N5227B Vector Network Analyzer

Quality Certification
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