Nokia series

Nokia 3AL82188AA

Product description: Nokia 3AL82188AA_400GBase-FR4 QSFP56-DD Transceiver (SMF, 1310nm, 2km, LC)_liyuan tech
INQUIRY

Manufacturer: Nokia

Part Number: 3AL82188AA

CLEI: WQTREUVTAA

Form Type: QSFP56-DD
Transceiver Type: FR4
Speed Description: 400-Gigabit
Wavelength: 1310nm
Media: MMF
Reach: 2km
Connector: LC
DOM: DOM
I. Product Description
1. Brand and Model: Nokia 3AL82188AA
2. Packaging Form: QSFP56-DD
QSFP: The full name is "Quad-Channel Small Form-factor Pluggable", which is a standard form of optical module or cable connector.
56: Each channel has a rate of 56 Gbps (using PAM4 modulation technology).
DD: The full name is "Double Density", meaning "double density". It adds a second electrical interface on top of the standard QSFP size, thus having 8 channels (while the traditional QSFP28 only has 4).
Summary: The QSFP56-DD packaging provides a total bandwidth of 8 channels × 56 Gbps = 400 Gbps, which is one of the mainstream high-performance packaging for achieving 400G rates at present, with high port density.
3. Rate and Type: 400G-FR4
400G: The total data rate of the module is 400 Gigabit Ethernet.
FR4: This is the 400G optical module type defined by the IEEE standard.
F: Represents "Fiber", using optical fiber transmission.
R: Represents "Range", here referring to a transmission distance of 2km.
4: Indicates using 4 wavelengths (or 4 channels) for transmission (2 on each end, 4 on both).
Working Principle: At the transmitting end, the 400G electrical signal is split by the chip into 4 paths (each approximately 100G),
then modulated onto lasers using 4 different CWDM (coarse wavelength division multiplexing) wavelengths (approximately 1271, 1291, 1311, 1331 nm), and multiplexed onto a single optical fiber for transmission.
At the receiving end, the opposite process is carried out, where the composite optical signal is demultiplexed into 4 independent signals, and then converted back into electrical signals.
Therefore, it only requires a pair of optical fibers (one for sending and one for receiving) to achieve 400G transmission.
4. Transmission Distance: 2km
The maximum transmission distance is 2 kilometers. This is a very typical distance, covering scenarios such as interconnection between buildings within a data center campus,
and interconnection between different module areas within a data center.
5. Wavelength: 1310nm
The 1310nm indicated here is a central wavelength or wavelength range. In fact, as stated in the FR4 standard, it uses 4 specific CWDM wavelengths,
concentrated in the O-band (1260nm - 1360nm), where the loss of transmission in optical fibers is relatively low.
6. Fiber Type:
Single-mode fiber must be used. Multi-mode fiber cannot support 400G transmission over 2 kilometers.
Core Characteristics Summary:
High Rate: 400GbE.
High Density: QSFP56-DD packaging, saving space on the device panel.
High Efficiency: Using PAM4 modulation and wavelength division multiplexing technology, achieving 400G transmission with a pair of optical fibers.
Low Latency: Meeting the latency-sensitive requirements of applications such as finance and high-performance computing.
Low Power Consumption: Compared to earlier solutions, modern integrated technology has optimized power consumption (typically below 10W).
Digital Diagnosis Monitoring: Supports DDM function, which can monitor parameters such as temperature, voltage, transmit optical power, and receive optical power in real time, facilitating network management and fault troubleshooting.
II. Usage Scenarios
This optical module is mainly used in network environments that require ultra-high speed and medium-short distance transmission.
1. Data Center Interconnection
· Scenario: Connecting core switches, aggregation switches, or routers (DCI - Data Center Interconnect) between different buildings within the same data center campus. The 2-kilometer distance perfectly meets such requirements.
2. Data Center Spine-Leaf Architecture
· Scenario: Provide high-speed uplink between the **Spine (core)** switches and Leaf (leaf) switches in large data centers. As servers are generally upgraded to 25G/100G, the Spine layer requires 400G interfaces to converge huge traffic.
3. Interconnection of High-End Switches and Routers
· Scenario: Connect core switches and routers in different cabinets to build a high-speed backbone network. Commonly found in large enterprise networks and the core layer of cloud service providers.
4. 5G Transport Network
· Scenario: In the backhaul network of 5G networks, high-speed connections are needed between metro aggregation and core nodes, and the 400G-FR4 module can be used for the high-speed ports of these devices.
5. High-Performance Computing Network
· Scenario: Connect computing nodes, storage nodes and file systems, requiring extremely high bandwidth and low latency. 400G links are key to building such infrastructure.
In addition to Nokia 3AL82188AA , Liyuan Tech supply a wide range of other Nokia Series . If you have any need or interest, please feel free to send inquiry to global@chn-liyuan.com

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