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800G Transceiver: QSFP-DD and OSFP Packages

800G Transceiver: QSFP-DD and OSFP Packages

The 800G optical network application is about to set out on a journey toward high-speed, high-density ports and low latency DCI, even though the current surge in demand for component companies may be in 400G optical modules. Compared to the 400G optical transceivers of the previous generation, the 800G transceiver can receive 8 billion bits per second, more than twice as much. The primary 800G module package QSFP-DD and OSFP will be covered in this article.


Which 800G transceiver packaging trend is it following?

The optical module transceiver, which is the fundamental component of the optical communication industry, is the optoelectronic device that carries out photoelectric and photoelectric conversion in optical communication. Fiber transceivers' form factors have evolved from GBIC packaging to smaller SFP packaging and, finally, to the 800G QSFP-DD and OSFP packaging that are used today. The overall advancement of the 800G transceiver is in the directions of faster speed, smaller size, and hot-swappability. Ethernet, CWDM/DWDM, connectors, Fiber Channel, wired and wireless access are among the primary application scenarios; the telecom and data communication markets are covered by the sub-scenarios.


800G QSFP-DD Form Factor.

High-speed, four-channel, dual-density, small pluggable module. Data centers can effectively expand and scale cloud capacity as needed thanks to the preferred package for 800G QSFP-DD optical modules. The QSFP-DD module uses 8-channel electrical interfaces with rates up to 25Gb/s (NRZ modulation) or 50Gb/s (PAM4 modulation) per channel to provide solutions up to 200Gb/s or 400Gb/s aggregation.


The Advantage of 800G QSFP-DD

1. Compatible with the QSFP+/QSFP28/QSFP56 QSFP package(backward compatibility).

2. adopt a two-by-one stacked integrated cage and connector that supports both a single- and double-height cage connector system.

3. Cage design and optical module housing optimization allow for a heat capacity of at least 12 watts per module with SMT connectors and 1xN cages. By lowering the optical module's need for a heat dissipation function, the higher heat capacity can cut down on some extra expenses.

4. The MSA fully considered the flexibility of user use when designing QSFP-DD, adopted the ASIC design, supported a variety of interface rates, and could be backward compatible (compatible with QSFP+/QSFP28), lowering port costs and device deployment costs.

800G OSFP Form Factor:

OSFP is a new type of optical module that is much smaller than CFP8 but slightly larger than QSFP-DD.

It has 8 high-speed electrical channels and still supports 32 OSFP ports in each 1U front panel.

By using the integrated heatsink, the heat dissipation performance can be greatly improved.


The Advantages of 800G OSFP:

1. Since the OSFP package supports more channels and higher data transmission rates, it can provide higher performance and longer transmission distances.

2. The OSFP module is designed as an 8-channel module (octal or 8-lane) and directly supports a total throughput of up to 800G, enabling higher bandwidth density.

3. OSFP is designed to support higher rates in the future. Due to the larger size of the OSFP module, it is possible to support higher power consumption and therefore higher throughputs, for example 1.6T.

4. The OSFP module features excellent thermal design and can handle higher power consumption.

800G Transceiver Form Factors Parameter Comparison






Electrical Lanes



Single Lane Rate



Total Max Data Rate






Backward Compatibility with QSFP+/QSFP28



Port density in 1U



Bandwidth in 1U



Power consumption Upper Threshold



OSFP and QSFP-DD are preferred by fiber producers. While the former is typically chosen for telecommunications applications, the latter is thought to be better suited for data center environments.


How to choose 800G Transceiver for your data center projects?

Transmission distance, fiber type, form factor, and more must be carefully considered in order to select the best 800G transceiver for your network application.

The 800G QSFP-DD module can be used to meet the demand for high bandwidth and large-capacity data transmission in high-speed network environments, including data centers, cloud computing, and large-scale networks.

Network environments like data centers, cloud computing, and ultra-large-scale networks that demand high bandwidth and large capacity data transmission can use the 800G OSFP module.


As technology continues to advance and innovate, we can anticipate that 800G optical modules will become more prevalent in real-world applications and will further the growth of the digital communication industry.

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