Tag Archive for: multimode

Bulk Fiber Optic Cable

Bulk fiber optic cable is a type of optic cable that contains multiple strands of fiber bundled in spools or reels for installation in various applications. This bulk cable can transport large amounts of data quickly and efficiently. So, they are ideal for a variety of applications, such as telecommunications, data centers, cloud computing, etc. In addition, bulk fiber cables are essential components in modern networking and communication systems. The increasing popularity of 5G technology will further drive the demand for bulk optical cables.

bulk fiber optic cable

Bwnfiber is a leading bulk fiber optic cable supplier & manufacturer in China. We have a diverse range of bulk fiber optic cables tailored for various networking needs. Our bulk fiber cable provides 50 micron, 62.5 micron, and 9 micron both single-mode and multimode options with LC, ST, and SC connectivity. In addition, our bulk cables are available in 1000ft reels, making it easy to install large quantities of cable in a short amount of time. Over the years, our products have covered the USA, Saudi Arabia, the UK, France, Brazil, Chile, South Africa, etc.

Types of Bulk Fiber Optic Cable

There are several types of bulk fiber cables, and each is designed to meet specific requirements. The most common types include single-mode and multimode fiber cables. Single-mode fiber cables are designed to transmit data over long distances with minimal signal loss, making them ideal for long-haul communication applications. On the other hand, multimode fiber cables are suitable for shorter distances and are commonly used in local area networks (LANs) and data centers.

In addition to single-mode and multi-mode cables, there are other bulk optical cables, such as armored fiber cables, aerial optical cables, etc. Armored fiber cables are designed with additional layers of protection, such as metal or Kevlar, to enhance their durability and resistance to damage. Aerial Fiber Optic Cable is designed for aerial applications or applications where the cable must be suspended in the air.

Constructions of bulk fiber optic cable

Bulk fiber cable constructions can vary depending on the specific requirements of the network. Some common types of fiber cable construction include loose tube, tight-buffered, ribbon, central tube, and more. Each construction type has its advantages and is suitable for different applications.

Loose tube

Loose tube construction involves placing individual fiber strands within protective tubes, providing flexibility and resistance to external environmental factors.


Tight-buffered construction involves coating each fiber strand with a protective layer, providing durability and ease of handling.


Ribbon construction involves arranging multiple fiber strands in a flat ribbon-like structure, allowing for high-density installations and efficient splicing.

Central tube

Central tube construction involves placing fiber strands within a central tube, protecting external forces.

FAQs of Bulk Fiber Optic Cable

1. What is bulk fiber optic cable used for?

Bulk fiber cable is ideal for a variety of applications, such as telecommunications, data centers, cloud computing, etc. They are essential components in modern networking and communication systems.

2. What are the types of bulk fiber optic cables?

The most common types include single-mode and multimode fiber cables. In addition, there are other bulk optical cables, such as armored fiber cables, aerial optical cables, etc.

3. What are the constructions of bulk optical cables?

Some common bulk fiber cable constructions include loose tube, tight-buffered, ribbon, central tube, and more.

4. Can bulk fiber optic cables be customized?

Yes. We can customize bulk fiber cables according to your needs and print company information or logos on fiber optic cables.

5. Can I customize the color of the sheath?

Yes. We confirm the Pantone color code and then produce the sheath color.

6. What is the minimum order length for bulk fiber optic cable?

The minimum order quantity is 100m.

7. How many days is the production cycle?

5-10 days.

Single Mode vs Multimode Fiber

Fiber optic cables include single mode and multimode fiber, single mode can only propagate one type of mode, and multimode can propagate multiple modes. Fiber optic cable comprises a core, cladding, and a buffer. The core is the central part of the fiber where the light travels. Single-mode fiber has a smaller core and only one pathway of light or mode of propagation. The smaller core size leads to lower attenuation allowing for longer transmission distances and higher bandwidth. Instead, multimode fiber has a large core that supports multiple simultaneous light modes. This means that more types of data can be transferred. In addition, the larger core leads to higher attenuation than single-mode fiber, limiting bandwidth and transmission distance.

single mode vs multimode fiber

However, multimode fiber is easier to install due to its larger cores, which are easier to align. On the other hand, multimode fiber is less expensive than single-mode fiber optic cable. The differences between single-mode and multi-mode fiber affect bandwidth, transmission distance, cost, installation, etc. So, what is the difference between single-mode and multimode fiber optic cables? What factors should be considered when choosing between these two fiber types? The following is a detailed introduction.

Difference between single mode vs multimode fiber

Fiber Core

Single-mode cable has a small fiber core much smaller than multimode fiber. Its typical core diameter is 8-10 µm. The multimode fiber core diameter is 50 µm and 62.5 µm typically.

Transmission Distance

Single-mode fiber supports long-distance transmission, while multimode optical fiber is designed for short-distance runs. Single-mode fiber can go as far as 40 km or more. The maximum transmission distance of multimode fiber is between 300 and 500 meters. Generally, single-mode fiber is used for lengths greater than 500m, and multi-mode fiber is less than 500m.


Single-mode fibers have a higher bandwidth capability than multimode fibers. Single-mode fiber can only have one signal/ray of light that can pass through the fiber at a time. So, its bandwidth is unlimited theoretically. On the other hand, multimode fiber bandwidth is limited by its light mode. This caps the bandwidth and leads to five grades of multimode fiber each with different bandwidth and distance capabilities.


Multimode fibers tend to have higher attenuation than single-mode fibers. Single-mode fiber works with lasers at operating wavelengths with less signal attenuation or degradation of a signal. Multimode fibers rely on the transmission of multiple light modes with less brightness and higher attenuation.

Wavelength & Light Source

Single-mode fibers can be classified as the OS1 and OS2 types, fiber wavelength is 1310 nm and 1550 nm. Single-mode fiber often uses a laser or laser diode to produce light injected into the cable. Due to the large core size of multimode fiber, some low-cost light sources that work at the 850nm and 1300nm wavelengths are used in multimode fiber cables.

Sheath Color

According to the TIA-598C standard definition, single-mode fiber is coated with a yellow outer sheath, and multimode fiber is coated with an orange or aqua jacket.

Terminate Fiber

Single-mode fiber is more difficult than multimode fiber to terminate due to its smaller core size.


Multimode fiber systems are much cheaper than single-mode fiber systems and are considered more cost-effective. Single-mode fibers require more expensive active equipment, such as electronics and laser transmitters. Whereas multimode fibers utilize cheaper electronics, thus leading to lower overall system costs.

In conclusion

Choosing the right fiber cable comes down to what you need for your specific application. Single mode fiber is ideal for long-distance data transmission applications, including CATV, carrier networks, MANs, PONs, etc. Multimode fiber is perfect for lighter-capacity bandwidth and shorter-distance applications like general data and voice applications, such as adding segments to an existing network.