What is large-capacity transmission technology - WDM/OTN?

Large-capacity transmission technology refers to the use of technologies such as Wavelength Division Multiplexing (WDM) and Optical Transport Network (OTN) to increase the capacity and efficiency of optical fiber networks.

WDM is a technology that allows multiple data streams to be transmitted simultaneously over a single optical fiber by using different wavelengths of light to carry each stream. This enables a significant increase in the amount of data that can be transmitted over the same physical infrastructure.

OTN is a standardized protocol for transporting data over optical networks, providing features such as error detection and correction, performance monitoring, and network management. OTN is designed to improve the efficiency and reliability of optical networks, making it easier to manage and scale large-capacity transmission systems.

By combining WDM and OTN technologies, operators can create high-capacity optical networks that can support the increasing demand for data transmission and enable the delivery of high-speed services such as video streaming, cloud computing, and mobile communications.

Wavelength Division Multiplexing (WDM)

- Combines multiple optical signals onto a single optical fiber by assigning each signal a unique wavelength.
- Allows for high-capacity transmission by utilizing the entire optical spectrum.
- Supports bit rates in the terabits per second (Tbps) range.

Optical Transport Network (OTN)

- A protocol and network architecture designed to optimize the transport of multi-source, multi-bitrate, and multi-protocol signals over WDM networks.
- Provides framing, switching, and grooming capabilities to manage and optimize traffic.
- Facilitates efficient utilization of optical network resources, allowing for dynamic and flexible connectivity.

WDM/OTN Technology

- Combines WDM and OTN to enable high-capacity, flexible, and reliable optical networks.
- Advantages include:
- Increased capacity: Supports multiple 100+ Gbps signals on a single fiber.
- Bandwidth efficiency: Optimizes bandwidth usage through dynamic channel allocation and flexible bandwidth management.
- Service agility: Allows for rapid provisioning and reconfiguration of network services.
- Simplified network management: Centralized control and monitoring simplifies network operations.
- Reduced costs: High-capacity and efficient transmission reduces the cost per bit transported.

Applications of WDM/OTN

- Long-haul and metro optical networks
- Data center interconnects
- Mobile backhaul networks
- Cloud and content delivery networks
- Enterprise and network service provider networks

WDM (Wavelength Division Multiplexing) is a technology that uses different optical waves to carry different services and realizes simultaneous transmission of multiple services in the same optical fiber. OTN (Optical Transport Network) can be regarded as an optimized and upgraded version of WDM. What is WDM? If the optical fiber is compared to a highway, the light waves used to transmit services in the WDM system are compared to trucks, and different transmission services such as blog, video, and wechat are equivalent to packages to be transported, and these packages are directly placed on different trucks. If these trucks want to enter the optical fiber transmission regardless of the lanes, then crowding in will cause chaotic traffic flow on the entire expressway and affect the transmission efficiency. Different transmission services can be transmitted simultaneously on the same optical fiber with WDM. It is equivalent to divide the lanes for different vehicles on the expressway, allowing different vehicles to run on different lanes at the same time, improving transmission efficiency. https://www.glsun.com/article-p119-large-capacity-transmission-technology-wdm-otn.html