With the growth of users' demand for data transmission, it means that optical communication providers can not only stay in the 25g, 40g data transmission stage. In the past two years, because the optical industry develops with "100G network deployment" as the center, the 100G optical module has developed rapidly in the data center market. 100G optical module has even become the trend of a certain stage in this era. Today we will talk about the 100G optical module, a product of the big data era.

On the market, there are many kinds of packaging for optical modules. However, 100G optical module is an optical module packaged as CFP / cfp2 / cfp4 / qsfp28, and its transmission rate is 100G. Next, hengtaitong will introduce the overview, advantages and application of 100G optical module in detail.

Describe the overview, advantages and application of 100G optical module in detail

Technology development of 100G optical module

The technical scheme of 100G optical module dates back to 2010. The three standards of 100G sr10, LR4 and Er4 introduced by IEEE 802.3ba project team are respectively for 100m, 10km and 40km transmission.

Compared with 2.5G, 10g or 40g WDM systems, 100G optical transmission uses digital coherent receiver to map all optical attributes of optical signal to the electric domain through phase diversity and polarization state diversity. Using mature digital signal processing technology, polarization demultiplexing, channel damage equalization compensation, timing recovery, carrier phase estimation, symbol estimation and linear decoding are realized in the electric domain. While realizing 100G optical transmission, a series of significant technical changes have taken place in 100G optical module, including polarization multiplexing phase modulation technology, digital coherent reception technology, the third generation of super strong error correction coding technology, etc., which meets the needs of users with the times.

Packaging type of 100G optical module

CFP / cfp2 / cfp4 optical module

The volume of CFP series optical modules gradually reduces. Cfp4 optical module is half of the width of cfp2 optical module, while cfp2 optical module is half of the width of CFP optical module. Both meet the requirements of 40g and 100G network transmission, and can support 100 Gbps data transmission. Cfp4 optical module is more suitable for high-density network applications.

Qsfp28 optical module

As a small-scale 100G optical module, qsfp28 optical module has attracted more and more attention. As the name implies, qsfp28 optical module has the same design concept as qsfp optical module. The first generation qsfp optical module is equipped with four TX and Rx ports, and the speed between each channel is 10Gbps. For qsfp28 optical module, each channel of qsfp optical module can send and receive data up to 28gbps. Compared with cfp4 optical module, qsfp28 optical module is smaller in size than cfp4 optical module. Although qsfp28 optical module has the advantage of higher density than cfp4 optical module, cfp4 optical module has the advantage of higher maximum power consumption in longer distance optical transmission.

Advantages of 100G optical module

1. The CFP optical module supports all C-band wavelength tunable and can complete the link detection. The common optical dual binary modulation pattern ODB is selected, which is convenient to arrange and the power consumption is less than 24W.

2. The volume of cfp2 optical module is one-half of CFP, and its integration degree is twice of CFP. It can complete the stable acceptance sensitivity within a wide dynamic input range according to SOA, and support the overall CFP optical module, and its power consumption is less than 9W.

3. The volume of cfp4 optical module is one-half of that of cfp2, its integration degree is twice of that of cfp2, and the port density of front plate is twice of that of cfp2. The MSA protocol of cfp4 optical module supports the same speed as cfp2 and cfp2s, the transmission power is significantly improved, but the power consumption is greatly reduced, only about half of the original, and the system cost is lower than cfp2.

In addition, cfp4 optical module adopts the form of 4 * 25, through 4 25g channels, to complete 100G transmission, with higher transmission power and stronger security.

4. The packaging style of qsfp28 optical module is smaller than that of cfp4 optical module. The power consumption of qsfp28 optical module is generally no more than 3.5W. With qsfp28 optical module, it can directly upgrade from 25g to 100G without 40g, with lower cost.

In the above, we have learned the origin, overview and advantages of 100G optical transceiver module. Through these, we have a general understanding of 100G optical transceiver module. Let's continue

What are the applications of 100G optical modules?

The transmission rate of CFP / cfp2 / cfp4 optical module is 40g / 100G, which is applied to Ethernet; synchronous optical fiber; optical transmission network;

The transmission rate of qsfp28 optical module is 4-times; 25-28g, which is applied to infinite broadband; Ethernet.

With the increase of data transmission, the demand of users becomes larger; 100G optical network is more and more widely used. Hengtaitong provides 100G optical module transmission solution, welcome to visit.