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200G Optical Module

The 200G optical module is a key speed node in the evolution of data centers from 100G to 400G/800G, playing an important role in AI training clusters, high-performance computing (HPC), and cloud networks. Unlike the NRZ technology used in 100G (QSFP28), 200G QSFP56 commonly adopts PAM4 modulation and integrates more efficient DSP (Digital Signal Processing) chips, optimizing heat dissipation and power consumption while maintaining high-speed transmission. At the same time, this technology doubles the single channel rate to 50Gbps through a four level pulse signal without increasing physical bandwidth, effectively saving fiber costs and reducing link losses.

Application

  • AI/ML cluster: Provides low latency high-speed interconnection between GPU servers and switches.
  • Cloud data center: used for uplink aggregation in Spine Leaf architecture.
  • 5G Bearer Network: Supports high bandwidth requirements in 5G intermediate and backhaul networks.  
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Popular Package Form

At present, the mainstream 200G solutions on the market are mainly divided into two packaging modes: QSFP56 and QSFP-DD. QSFP56 is the mainstream connection solution for 200Gb Ethernet, while QSFP-DD is mainly used for 400G network transition and high-density AI clusters. The general difference between the two is shown below:

200g optical module package types QSFP56 and QSFP-DD
QSFP56(4x50G PAM4)
  • Features: Transmits four 50Gb/s to 56Gb/s signals within a QSFP package.
  • Core Technology: Employs PAM4 (4-level pulse amplitude modulation) technology, doubling the transmission rate per channel from 25G to 50G.
  • Common Models: 200G SR4 (short-range multimode), FR4 (single-mode 2km), LR4 (single-mode long-range 10km).
QSFP-DD (8x25G NRZ or 8x50G PAM4)
  • Features: Quad Small Form Factor Pluggable-Double Density. NRZ modulation is simpler than PAM4, reducing power consumption by 2-3W and offering extremely low latency.
  • Core Technology: Typically uses 8 channels, each with 25G NRZ (economical) or 50G PAM4 to achieve a total bandwidth of 200G.
  • Common Models: 200G SR8, 200G PSM8, 200G LR8.

200G Optical Module Wholesaler & Factory

Yingda can provide two packaging options for 200G optical modules for customers to choose from. All products are produced with brand new materials and high-end chips, with 100% pass testing and comprehensive compatibility testing. They are widely compatible with switches and servers from brands such as Mitrotek, Cisco, HPE, Huawei, ZTE, Ruijie, Dell, etc.

qsfp dd 200g sr8 transceiver module

200G QSFP-DD SR8 Module

  • Package: QSFP-DD
  • Optical interface: MPO-16
  • Fiber type:MMF
  • Power consumption:4W
  • Transmission distance:100m
  • Transmitter:VSCEL
  • Features: The 200G QSFP-DD SR8 is a multi-mode parallel product that uses an 8-channel 850nm VCSEL array and complies with the 100GBASE-SR4 protocol standard.
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qsfp dd 200g psm8 transceiver module

200G QSFP-DD PSM8 Module

  • Package: QSFP-DD
  • Optical interface: MPO-16
  • Fiber type: SMF
  • Power consumption: 6W (2km) or 6.5W (10km)
  • Transmission distance: 2km
  • Transmitter: 1310nm DML
  • Features: 200G QSFP-DD PSM8 is a high-speed product of single-mode parallel technology. Compared to wavelength division multiplexing technology, PSM technology has a cost advantage in medium to long distance transmission.
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qsfp dd 200g lr8

200G QSFP-DD LR8 Module

  • Package: QSFP-DD
  • Optical interface: LC duplex
  • Fiber type: SMF
  • Power consumption: 7.5W
  • Transmission distance: 10/20km
  • Transmitter: DML LWDM
  • Features:The 200G QSFP-DD LR8 optical module is designed based on 8-channel LAN-WDM wavelength division optics, achieving a 1E-12 zero error rate index over a transmission distance of 20km.
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qsfp56 200g sr4 transcevier, mmf om4 850nm 100m mpo 12 upc endface, 8x25g nrz, power consumption

200G QSFP56 SR4 Module

  • Package: QSFP56
  • Optical interface: MPO-12 UPC
  • Fiber type:MMF
  • Power consumption:5W
  • Transmission distance:100m
  • Transmitter:VSCEL
  • Features: The 200G QSFP28 SR4 optical module is the most cost-effective product in the 30m-100m cross cabinet cabling scenario, and can also achieve branch cabling
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200g qsfp56 dr4 transcevier, dr4 1310nm 500m mpo 12 apc connector, power consumption

200G QSFP56 DR4 Module

  • Package: QSFP56
  • Optical interface: MPO-12 APC
  • Fiber type:SMF
  • Power consumption:5.5W
  • Transmission distance:500m
  • Transmitter:EML
  • Features:Mainly used in 200GBASE-DR4 Ethernet links in data centers. Under the premise of enabling FEC in the system, it is possible to achieve 212.5Gbps data interconnection for single-mode fiber within 500m. Simultaneously compliant with QSFP56 MSA and IEEE 802.3bs 200GBASE-DR4 Ethernet standards.
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qsfp56 200g fr4 transcevier, smf 1310nm 2km cwdm4 (1271nm, 1291nm, 1311nm, 1331nm) lc/upc duplex optical interface

200G QSFP56 FR4 Module

  • Package: QSFP56
  • Optical interface: LC Duplex
  • Fiber type:SMF
  • Power consumption:5.5W
  • Transmission distance:2km
  • Transmitter:EML
  • Features: The 200G QSFP56 FR4 uses an uncooled EML CWDM transmitter and a wavelength division multiplexer at the receiving end; The maximum transmission distance through dual core single-mode fiber (SMF) can reach 2km, which can effectively reduce customers’ fiber cabling costs.
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200gb ethenet qsfp56 efr4 transceiver, cwdm4(1271nm,1291nm,1311nm,1331nm) smf 3 4km, lc/upc duplex receptacle

200G QSFP56 eFR4 Module

  • Package: QSFP56
  • Optical interface: LC Duplex
  • Fiber type:SMF
  • Power consumption:7W
  • Transmission distance:4km
  • Transmitter:EML
  • Features:The enhanced 200GE QSFP56 eFR4 uses a cooled EML CWDM transmitter, which can achieve a transmission distance of up to 10km, filling the physical gap in transmission between 2km and 10km.
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qsfp56 200g lr4 transcevier, lwdm4 (1295.56nm,1300.05nm,1304.58nm,1309.14nm), 10km lc/upc duplex, blue clasp

200G QSFP56 LR4 Module

  • Package: QSFP56
  • Optical interface: LC Duplex
  • Fiber type:SMF
  • Power consumption:7.5W
  • Transmission distance:10km
  • Transmitter:EML
  • Features:The 200G QSFP56 LR4 is the most common 200G optical module in long-distance DCI interconnection. The optical module adopts a cooled LAN WDM EML laser, which can achieve 212.5Gbps data interconnection for 10km or 20km through a pair of single-mode fibers.
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200g qsfp56 er4 transcevier, lwdm4 (1295.56nm,1300.05nm,1304.58nm,1309.14nm), 40km smf lc/upc duplex optical receptacle

200G QSFP56 ER4 Module

  • Package: QSFP56
  • Optical interface: LC Duplex
  • Fiber type:SMF
  • Power consumption:9W
  • Transmission distance:40km
  • Transmitter:EML
  • Features: The 200GE QSFP56 ER4 can achieve a maximum transmission distance of 40km with FEC enabled. At the same time, the IEEE 802.3cn protocol modifies the TDECQ (transmitter and dispersion eye closure of PAM4) correlation of the existing 200 Gb/s physical medium related sublayers on single-mode fibers to make their transmission more stable.
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Classification standard

According to the transmission distance, 200G optical modules can be divided into SR8, PSM8, LR8 and SR4, DR4, FR4, ER4, etc. Their specific technical parameters are shown in below table:

Part no.

Wavelength

Transmission distance

Transmitter

Receiver

Power consumption

Fiber type

Optical Interface

SR8

850nm

100m

850nm VCSEL

PIN

<4W

MMF

MPO-16

PSM8

1310nm

2/10km

1310nm DML

PIN

<6W (2km), 6.5W (10km)

SMF

MPO-16

LR8

LWDM8

10/20km

LAN-WDM DML

PIN

<7.5w

SMF

LC Duplex

SR4

850nm

100m

850nm VCSEL

PIN

<5w

MMF

MPO-12

DR4

1310nm

500m

EML

PIN

<5.5w

SMF

 

FR4

CWDM4

2km

EML

PIN

<5.5w

SMF

LC Duplex

eFR4

CWDM4

10km

EML

PIN

<7w

SMF

LC Duplex

LR4

LWDM4

10km/20km

EML

PIN

<7.5w

SMF

LC Duplex

ER4

LWDM4

40km

EML

APD

<9w

SMF

LC Duplex

How To Choose the right 200G Optical Module?

If you are worried about what kind of 200G optical module to choose, based on comprehensive considerations of transmission distance, fiber type used, or switch brand, Yingda recommended to follow the following selection ideas:

How we'll work together!

Step 1:

First consider the transmission distance

  • ≤ 100 m: 200G QSFP56 SR4(multimode) or QSFP-DD SR8(multimode) is preferred.
  • 500 m -2 km: 200GDR4 (500 m) or 400G FR4 (2 km), eFR4 (4km).  
  • 10 km: 200G
  • 30-40 km: 200G
Step 1:

Step 2

Choose the packaging form

  • 200GbEthernet mainstream connection solution, compatible with QSFP28, QSFP+ → QSFP56
  • 400G network transition, high-density AI cluster, compatiblewith QSFP56, QSFP28, QSFP+ → QSFP-DD
Step 2

Step 3

Power consumption and low latency

In 200G network, there are two main types of modules used for branching scenarios: one is the direct connection module 200G SR4 or 200G PSM4 that supports port splitting function, and the other is the branch-supporting cable 200G DAC or AOC. The choice of solution depends on whether your switch supports port splitting functionality.

Step 3

Step 4

Confirm branch capability

DR8 supports branching to 2 x 400G DR4 or 8 x 100G DR1, making it easy to deploy mixed rate networks and an important feature for phased upgrades.

Step 4
ORDER START
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Technial Articles on 200G Optical Module
200G Optical Module Buying FAQ

QSFP-DD and OSFP 200G transceiver are recommended because AI clusters require frequent gradient synchronization and parameter exchange between computing nodes (GPUs), and the network has stringent requirements for low latency, ultra-high bandwidth, and extremely high heat dissipation efficiency.

Mass production of products with short lead times, the popular items will be ready in 3-5 days.

Yingda optical module are the most competitive price based on the best quality. We keep long term reliable in-between-after sales service.

Yingda can provide 200G QSFP56 ethernet optical transceiver in bulk, the most popular types are QSFP56 200Gbase SR4, DR4, FR4, LR4, and ER4 optics.

The lowest cost solution among all 200G optical modules is 200G passive direct copper cable. In scenarios that require optical transmission, 200G NRZ optical modules (such as 200G SR8) typically have a cost advantage over mainstream 200G PAM4 optical modules.

Our price will be competitive according to your large quantity order, which can help you get more market share.

For gigabit transceivers, it is ok, if high value products, will charge, and return sample cost if you placed mass production order.

Timely Delivery

High productivity efficiency, skilled front-line operators and strict production control ensure timely delivery.

Quality Assurance

High-precision testing equipment and top industry quality control system ensure high quality standards.

Competitive Price

Long-term stable supply chain and cost control that changes in line with market trends ensure the best price

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