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DAC and AOC Cable

D-NET:Your Professional DAC and AOC Cable manufacturer!

D-NET, a Guangdong-based high-tech enterprise specializing in optical fiber communication, excels as a leading DAC and AOC cable manufacturer in China. Our dedicated R&D team continuously innovates to meet market demands, ensuring our products surpass industry standards. We offer comprehensive pre-sale, sales, and after-sale services, including technical support and warranties, providing customers with an exceptional user experience and satisfaction. D-NET is your reliable partner in optical fiber communication excellence.

 

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Our products are manufactured or executed to very high standards, using the finest materials and manufacturing processes.

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We strictly control every production process of the product, after strict testing and inspection, to ensure the quality of the product.

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All products we provide come with a 3-month replacement, 3-year warranty.Make consumers more at ease.

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We can provide customers with a full range of product solutions services, free wave division transmission scheme design services.

 

 

 

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Definition of DAC and AOC Cables
AOC Cable
 
 
01.

What is an AOC cable?

Active Optical Cable (AOC) refers to a kind of optical fiber transmission cable with active optical module built at both ends of the optical cable. It realizes the signal transmission through photoelectric conversion, and has the characteristics of low loss, high bandwidth and far transmission distance.

 

 
02.

What is an DAC cable?

Direct Attach Cable (DAC) consists of double copper cable with SFP+/SFP28/QSFP+/QSFP56/QSFP28 connector for direct electrical connection to the active equipment. DAC cables can be divided into passive DAC and active DAC.

Active DAC vs Passive DAC: the active one helps to improve signal quality and provides a longer cable distance.

DAC Cable

 

What are benefits of DAC and AOC Cables?
 

 

The advantages of DAC:

Cost Savings:

The cost of DAC is relatively low, and when implemented in large data centers, DAC is lower compared to an AOC of the same length.

Lower power consumption:

The cooling requirements of DAC are not strict, as its thermal design reduces power consumption and saves cost.

Wider operating temperature:

DAC don’t produce heat thus making it a more versatile product that can be used in wider temperature ranges. The DAC does not generate heat and can be used in a wider temperature range.

Thermal design:

DAC has excellent thermal design, good natural heat dissipation effect, energy saving and environmental protection.

Fast transmission speed:

DAC has a short transmission distance, but it can provide high-speed data transmission in a short distance.

Easy to deploy:

The DAC does not require additional photoelectric converters, simplifying the installation process.

The advantages of AOC:

Bend Radius:

The cables of AOCs are thin and have a significant bend radius.

Air-flow and cooling:

Since the AOC cable design is thin, the switch will have more airflow space to facilitate the cooling of the system.

Power consumption:

AOC power consumption is relatively low and suitable for long-running data center environment.

Transmission distance:

The AOC supports a long transmission distance, generally up to 100 meters, or even farther away.

Anti-interference:

AOC is made of optical fiber and is not disturbed by electromagnetic waves to ensure the stability of the signal.

Signal transmission:

AOC transmits optical signal, and the bit error rate is very low, which ensures the accuracy of data transmission.

Volume and weight:

AOC cables are light and easy to wire and transport.

Devices used:

The AOC contains active components such as lasers.

 

Usage of DAC and AOC Cables
 

 

AOC application:

AOC used for high-speed, high-reliability interconnection transmission equipment between data centers, high-performance computers, large-capacity storage and other equipment. It usually meets the electrical interface of the industry standard, through internal electrical-optical-electrical conversion, and uses optical cables. Superiority for data transmission.

DAC application:

DAC is sed on the switch in the data center computer room to connect the server and storage area network.

AOC active optical cable adopts optical fiber material (insulation), which belongs to optical fiber communication and is not disturbed by electromagnetic waves. DAC high-speed cable is composed of copper wire, which belongs to the field of electrical communication and will be subject to electromagnetic interference.

 

Process of High-Speed Cables
 

Step 1: Insulation chip is out

It is the basis of cable production, the quality of the core line has a very important impact on the subsequent process.

 

Step 2: Parallel to round package

This process has an important impact on the performance of the wire, including impedance, delay difference, attenuation, etc., so it must be produced in strict accordance with the process requirements, and the electrical performance is tested to ensure that the core line meets the requirements.

 

Step 3: Parallel pair of cable

The cable forming process affects the overall performance of the cable, so the consistency of the winding core wire, and the electrical performance of impedance, delay difference and attenuation should be tested to ensure that the cable forming core line meets the requirements.

 

Step 4: Wire-material weaving

This step needs to control the tension and arrangement of the wire, otherwise it will affect the overall performance of the preparation process.

 

Step 5: Outside the wire is escorted out

The outer quilt is covered with a layer of polyolefin material outside the braided or cable wire through the exit machine. The tightness of the outer quilt will also affect the appearance of the wire and the processing of the customer's finished products. Therefore, it is necessary to control the tension, line arrangement and pledge method.

 

Step 6: Finished product test

Conduct a series of tests on the product to ensure that the product can run normally.

 

 
Our factory & quipment
 
20241226112228
Production and test site
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test instrument
20241226112222
Project implementation site

 

 

FAQ

 

Q: Which of the following are differences between DAC and AOC?

A: DAC cable is used to connect switches, servers, and storage in the rack, while AOC cable is mainly used to connect storage between switches, servers, and different racks in the data center.

Q: What is the distance of AOC cable?

A: AOC is available up to a fixed length of 100M, however, because they are thinner there can be a risk of damage and breaking at longer lengths, so AOC tend to be used for distances in the 10s of meters, rather than 100.

Q: What is the difference between 100G AOC and 100G DAC?

A: The active optical cable (AOC) is a cable that uses an optical fiber link between two active devices. 100G AOC is different from the direct-attached cable (DAC) because it uses an optical transceiver at each end, which converts the electrical signal to an optical signal and vice versa.

Q: Which is an advantage of using DAC cables?

A: DAC provide reliable, cool and affordable data transmission at short distances with the highest available bandwidth.

Q: What are the disadvantages of a DAC cable?

A: One of the most significant drawbacks of DAC cables is their short transmission distance, which limits their usefulness in larger data center environments. AOC cables, on the other hand, are more expensive than their copper-based counterparts.

Q: What is the difference between copper and AOC?

A: The copper transceiver has a longer transmission distance, up to 300m. AOC has enhanced signal integrity and flexible deployment methods, and has better air flow and heat dissipation in the computer room cabling system, but its cost is higher than copper cabling at the 10G rate.

Q: Are the DAC and AOC high-speed cables available for all network devices?

A: Normally, DAC and AOC cables are suitable for most network devices, but certain devices may require a specific type of cable. Therefore, make sure you understand the requirements of the equipment before purchasing the cable.

Q: How about the maintenance of DAC and AOC cables?

A: It is necessary to check whether the cable connection is loose or damaged, and replace or repair it in time. Avoid bending or twisting the cables, and avoid any form of damage.

Q: Should DAC and AOC cables be installed by professionals?

A: Install DAC and AOC cables requires certain technology and experience. If you are not familiar with the cable installation and connection process, it is recommended to seek professional help.

Q: How do DAC and AOC cables compare to fiber optic cables and copper cables?

A: Compared with the traditional fiber optic cables and copper cables, DAC and AOC cables can greatly improve the data transmission speed and efficiency, but also have the advantages of better energy saving and easy installation.

Q: In which industries are DAC and AOC cables widely used?

A: DAC and AOC cables are widely used in the data center, server, storage, network, and telecommunications industries.

Q: Can the DAC and AOC cables be reused?

A: Most DAC and AOC cables can be reused, but pay attention to cable inspection, maintenance and repair.

Q: What is the optical module used for the AOC high-speed cable?

A: The optical modules used in the AOC high-speed cable include VCSEL optical module, PIN photo-detector module, TIA current amplifier module, etc.

Q: What optical interfaces are the AOC high-speed cables suitable for?

A: The AOC high-speed cable supports SFP +, QSFP +, QSFP28 and other optical interfaces.

Q: How do you test a DAC cable?

A: To test that the cable is functioning properly, use the testing platform to perform a bit error rate (BER) test. Plug the ends of the cable into the dual ports on the tester and start the test. If the results are within satisfactory parameters, the cable is fine. If not, replace the cable and do the test again.

Q: Why is DAC cable used?

A: As mentioned above, DAC cables are used for directly connecting ports between active equipment; switches, routers, servers and storage. Their main restriction is transmission distance. Their main benefit is cost, although there are other benefits.

Q: What is AOC cable structure?

A: Take a even closer examination and we can see that the active optical cable (AOC) assembly is actually composed of 4 functional parts. The “High-density QSFP+ connector”. This is the SFF-8436 electronic connector which can be plugged into a router or switch. The “4-Channel full-duplex active optical cable transceiver”.

Q: Can DAC cables be used for longer distances?

A: DAC cables are designed for short-distance connections and are typically limited to lengths of up to 10 meters. Beyond that distance, the signal can degrade, leading to data loss or errors. In contrast, AOC cables can be used for longer distances, up to several hundred meters.

Q: Do DAC and AOC cables require any special drivers or software?

A: No, both DAC and AOC cables are plug-and-play and do not require any special configuration or software. They are designed to be easy to use and install, making them a convenient solution for networking equipment connections.

Q: Can DAC and AOC cables be used interchangeably?

A: Yes, DAC and AOC cables can be used interchangeably, depending on the specific networking equipment and application requirements. However, it is important to ensure that the cable type and specifications are compatible with the devices being connected to avoid any performance or compatibility issues.

Q: Are DAC and AOC cables environmentally friendly?

A: Yes, both DAC and AOC cables have lower power consumption and generate less heat compared to other networking cable options. Additionally, they are reusable and recyclable, which makes them a more environmentally friendly option than other cabling materials.

 

 

 

We're well-known as one of the leading dac and aoc cable manufacturers and suppliers in China. If you're going to buy high quality dac and aoc cable made in China, welcome to get quotation from our factory.

SFP-10G-DWDM-C60-80, QSFP28-2X50G-AOC