PRIMUS IT Limited

The Modern Highly Interconnected Data Center(2022年)

primusit — 2022-03-02T12:45:39+0900

https://www.primus-it.com/products/wireless-interconnect/

The data center ecosystem is becoming more and more unprecedented in growth and innovation nowadays. The raising of new architectures and enhanced levels of performance strongly drive the deployment and installation moving forward, which perfectly meets the demands of the pursue of higher scale.

Primus IT dedicated to the datacom industry and is focused on investing heavily in the data centres on any scale. Our optical transceiver schematic products 10G SFP+, 25G SFP28, 40G QSFP+,100G QSFP28, 200G QSFP DD, 400G QSFPDD and beyond are supporting the highest bandwidth, highest density, lowest power and lowest total cost DCI solutions on the market today.

We are glad to announce that we are ready to partner with you to push SFP interconnect technologies even further to enable unprecedented scale, bandwidth, flexibility and efficiency to the modern, highly interconnected data center.

Primus IT specializes in the development and manufacture 100 bases to 400G optical transceivers including GBIC, SFP, SFP+, SFP28, QSFP+, QSFP28, XFP, XENPAK, X2, CFP, CFP2, AOC, DAC, etc. Primus IT provides cost-effective ethernet optical transceiver for customers worldwide in data communications, long-distance transmission, wireless networking and more.

Optical Transceivers Mass Production Process(2022年)

primusit — 2022-03-02T12:45:16+0900

https://www.primus-it.com/products/telecom-network-products/

①Trimming the pin
When the optical device has not been trimmed, the pins are long and cannot be directly assembled (welded) on the PCBA, so this operation flow is required.
The length of the pin should be between 1/3L-1L on the PCBA welding board (L is the length of the PCBA welding board)

②Shaping the pin
After the optical device is trimmed, the width between the pins is inconsistent with the thickness of the PCB welding board (1.0mm), in order to facilitate welding and assembly, the optical device pins need to be shaped;

③Welding + ④Welding inspection
Welding TOSA/ROSA to the PCB board, and set the welding temperature of the electric welding iron at 360±10℃; when welding, pay attention to the polarity of TOSA and ROSA;
Use a magnifying glass to inspect the solder joints to prevent missing soldering or poor solder joint contact
L is the length of the PCBA welding board

⑤Assembling
There are many types of accessories, such as shell, base, pull ring, unlocking button, pressing block, press buckle, etc., and bad assembly parts cannot be assembled during assembly.

⑥Debugging
Module debugging
Debugging extinction ratio
Eye diagram
Receiving sensitivity
Optical power
Calibration DDM etc...
The equipment involved is
Computer
Eye diagram device
Optical power meter
Attenuator
Stabilized power supply
One-to-two splitter
Fiber patch cord

⑨Cleaning the end face
The cleanliness of the end face is critical to the performance of the optical module
If the end face cannot be guaranteed to be clean and free of scratches, it will be defective

Primus lT is one of the professional ftth manufacturers in China, committing to the research and development of PON technology and provides the best solution in ftth 1gb to ethernet/lan converter. Primus lT can cooperate in the development according to the special requirements of customers, and provide customers with a complete set of FTTH solutions based on public telecommunications network product line.

Primus IT specializes in the development and manufacture 100 bases to 400G optical transceivers including GBIC, SFP, SFP+, SFP28, QSFP+, QSFP28, XFP, XENPAK, X2, CFP, CFP2, AOC, DAC, etc. Primus IT provides cost-effective transceiver module for customers worldwide in data communications, long-distance transmission, wireless networking and more.

CWDM and DWDM(2022年)

primusit — 2022-03-02T12:44:54+0900

https://www.primus-it.com/products/10g-asymmetric-epon.html

When dealing with OTN (Optical Transport Network), there are two main types of Wavelength Division Multiplexing (WDM) systems: Coarse Wavelength Division Multiplexing (CWDM) and Dense Wavelength Division Multiplexing (DWDM). As two modern WDM technologies, they are both used for increasing the bandwidth of fiber by combining optical signals of different wavelengths on one strand of multimode fiber module.

CWDM vs DWDM: Transmission Distance
Since DWDM wavelengths are highly integrated with the fiber during light transmission, DWDM is able to reach a longer distance than CWDM. Unlike the DWDM system, CWDM is unable to travel unlimited distances. The maximum reach of CWDM is about 160 km. While an amplified DWDM system can go much further.

CWDM vs DWDM: Modulation Laser
CWDM system uses the uncooled laser while the DWDM system uses the cooling laser. Cooling laser adopts temperature tuning which ensures better performance, higher safety, and longer lifespan of the DWDM system. But it also consumes more power than the electronic tuning uncooled laser used by a CWDM system.

CWDM vs DWDM: Cost
Because the range of temperature distribution is nonuniform in a very wide wavelength, so the temperature tuning is very difficult to realize, thus using the cooling laser technique increases the cost of the DWDM system. Furthermore, the DWDM devices are typically four or five times more expensive than that of a CWDM system. However, the price of a optical transceiver wholesale is about 20-25% less than a CWDM transceiver on account of the popularization of DWDM.

WDM vs DWDM: Advantages and Disadvantages
As mentioned above, the primary difference between DWDM and CWDM is the channel spacing (CWDM has almost 100 times wider channel spacing). This makes CWDM a simpler technology, resulting in advantages and disadvantages of the different systems with regard to cost, performance, and so on.

Primus IT specializes in the development and manufacture 100 bases to 400G optical transceivers including GBIC, SFP, SFP+, SFP28, QSFP+, QSFP28, XFP, XENPAK, X2, CFP, CFP2, AOC, DAC, 10G EPON, etc. Primus IT provides cost-effective transceivers solutions for customers worldwide in data communications, long-distance transmission, wireless networking and more.

How To Reduce Fiber Usage-BIDI (Bidirectional)(2022年)

primusit — 2022-03-02T12:44:33+0900

https://www.primus-it.com/products/wireless-interconnect/

1. In general, duplex is used;
2. BIDI SFP's are used in pairs in base stations or projects,to save fiber resources (1310nmTX/1550nmRX - 1550nmTX/1310nmRX

How to reduce fiber usage-BIDI (bidirectional)
With the rapid development of public telecommunications network, fiber resources will become tighter and tighter, and the demand for solutions to save fiber resources will gradually increase.

BIDI optical module is a single-fibre bidirectional optical module. It uses WDM technology to transmit and receive center wavelengths in two different directions to achieve bidirectional transmission of optical signals on an optical fiber. Optical modules generally have two ports: transmitting port (TX) and receiving port (RX), while BIDI optical modules have only one port, which is filtered by the filter in the multimode fiber module, and at the same time completes the transmission of optical signals of one wavelength and the other. One kind of wavelength optical signal reception (the wavelengths of BIDI optical modules are all combined forms), so BIDI optical modules must be used in pairs, and its biggest advantage is to save fiber resources.

Advantages of BIDI optical module
The most obvious advantage of using BIDI optical modules, such as SFP+ BIDI and SFP BIDI optical modules, lies in reducing the cost of optical fiber cabling infrastructure. The BIDI optical module reduces the number of ports on the fiber patch cord panel, reduces the space occupied by the tray dedicated to fiber management, and reduces the SFP interconnect cable that need to be used.

Although the price of BIDI optical modules (WDM optical modules) is higher than that of traditional dual-fiber bidirectional optical modules, the amount of light used per unit of transmission distance has been reduced by half. For many networks, the cost savings of using fewer fibers far exceeds the relatively high purchase price of dual-fibre bidirectional optical modules.

Primus IT BIDI solution includes SFP, SFP+, XFP, SFP28 etc, can be able to help customers control the cost and save the budget.

As one of the professional optical module manufacturers, Primus IT specializes in the development and manufacture 100 bases to 400G optical transceivers including GBIC, SFP, SFP+, SFP28, QSFP+, QSFP28, XFP, XENPAK, X2, CFP, CFP2, AOC, DAC, etc. Primus IT provides cost-effective transceivers solutions for customers worldwide in data communications, long-distance transmission, wireless networking and more.

Moving Forward- Optical Transceiver 400G And Beyond(2022年)

primusit — 2022-03-02T12:44:10+0900

https://www.primus-it.com/products/telecom-network-products/

Due to the ongoing large increase in bandwidth demand, Data Center connections are expected to move from 25G/100G to 100G/400G.

Within the Data Center Racks
• 10GE still being deployed
• 25GE starting to be deployed in volume
• 100GE (or 50G) will follow

Between Data Center Racks
• 40GE still being deployed
• 100GE starting to be deployed in volume
• 400GE will follow at large Cloud Service Providers

Long Spans/DCI & WAN
• 10G DWDM/Tunable still being deployed
• 100G/200G Coherent starting to be deployed
• 400G Coherent will follow – Then 600G or 800G

Following the market situation, 400G is a priority for the large DC (intra-DC application) and, at a lower scale, for the Telco transmission department.

400G is coming with 2 form factors for the Access/Intra-DC:

QSFP56-DD (also called QSFP-DD for QSFP Double Density)
OSFP (for Octal SFP)

Regarding the mainstream form factor of 400G, please see below comparison.

EPON 10g and GPON 5g are two typical passive optical networks (Passive Optical Networks, PONs), which belong to short-distance optical cables. They are often used in urban areas to realize Internet surfing, Internet voice and transmission network telecom. They can also be used in cellular base stations. Backhaul connection, Wi-Fi hotspot communication, and even distributed antenna array. The biggest difference between the two is that the download and uplink communication protocols are different.

As one of the professional fiber optic transceiver manufacturers, Primus IT specializes in the development and manufacture 100 bases to 400G optical transceivers including GBIC, SFP, SFP+, SFP28, QSFP+, QSFP28, XFP, XENPAK, X2, CFP, CFP2, AOC, DAC, etc. Primus IT provides cost-effective transceivers solutions for customers worldwide in data communications, long-distance transmission, wireless networking and more.

100G Optical Transceiver'S Form Factor Comparision(2022年)

primusit — 2022-03-02T12:43:25+0900

https://www.primus-it.com/products/telecom-network-products/

There are many packaging types for 100G optical modules, the common ones are QSFP28, CXP, CFP, CFP2, CFP4, etc. At present, 100G optical modules are being used more and more widely in enterprise data centers.

The first-generation 100G optical module was a very large CFP optical module, and then CFP2 and CFP4 optical modules appeared. Among them, the multimode fiber module is the latest generation of 100G optical modules, and its width is only 1/4 of the CFP optical module. The packaging style of the QSFP28 optical module is smaller than that of the CFP4 optical module, which means that the QSFP28 optical module has a higher port density on the switch.

In 2020, due to the spread of the epidemic of COVID-19 in various countries around the world, the demand for networks has been promoted, and the construction of new infrastructures such as 5G networks and data centers has been accelerated. This directly stimulates the vigorous development of related ICT fields, such as GPON 5G, big data centers, artificial intelligence and industrial Internet. The development of these fields has brought about the continuous growth of network traffic and the number of users, and the performance requirements and business models have also been diversified.

QSFP28 has been a mainstream product in most high-speed connections applications, offers customers a wide variety of high-density and low-power 100 Gigabit Ethernet connectivity options for data center, high-performance signaling in telecommunication networks, enterprise core and distribution layers, and service provider applications.

Primus IT provides a well-compatible and high-performance QSFP28 portfolio to support global data centers operators and ISP, the portfolio includes

As a professional optical transceiver wholesale supplier, Primus IT specializes in the development and manufacture 100 bases to 400G optical transceivers including GBIC, SFP, SFP+, SFP28, QSFP+, QSFP28, XFP, XENPAK, X2, CFP, CFP2, AOC, DAC, etc. Primus IT provides cost-effective transceivers solutions for customers worldwide in data communications, long-distance transmission, wireless networking

Data Center : Optical Transceiver's QSFP+(40G)(2022年)

primusit — 2022-03-02T12:42:57+0900

https://www.primus-it.com/products/gpon/

QSFP（Quad Small Form-factor Pluggable）
40G optical module refers to a multimode fiber module with a transmission rate of 40Gbps. CFP and QSFP are the main packaging forms. 40G QSFP+ optical module is one of the most widely used optical modules.

QSFP+ connector is regarded as the enhanced generation of QSFP connector. Why do we call QSFP+ the plus one? Because it can support Infiniband, Fiber Channel and Ethernet at 10Gbp/s per channel, thus the combined data rate of the 4 channels can reach 40Gbp/s, which is a distinct improvement in data transmission speed. Besides, like the QSFP connector, the 40G QSFP+ interface can support transmission and network links over both single-mode and multimode infrastructures. To enable 40G QSFP+ connector to be split into 4 independent data streams for different network equipment, AOC breakout cable, DAC breakout cable and other types of breakout cables are used.

With the rapid development of data centers toward ultra-high-speed and large-capacity, the market demand for high-speed optical modules continues to increase. As a product that has been deployed in large numbers in data centers, 40G QSFP+ is gradually facing the future. All were eliminated in the year.

As a professional optical transceiver supplier, Primus IT specializes in the development and manufacture 100 bases to 400G optical transceivers including GBIC, SFP, SFP+, SFP28, QSFP+, QSFP28, XFP, XENPAK, X2, CFP, CFP2, AOC, DAC, GEPON EPON, GPON 5G, etc. Primus IT provides cost-effective transceivers solutions for customers worldwide in data communications, long-distance transmission, wireless networking and more.