What is the difference between SR, LR, LRM, ER and ZR in 10G optical modules?
In 10Gbps (10 gigabits per second) optical modules, SR, LR, LRM, ER, and ZR are used to describe the different types of modules and their applicable transmission distances and fiber types. The following is a detailed explanation of these abbreviations:
1. SR (Short Range)
Transmission Distance: Typically supports distances of several hundred meters, with a standard link length of approximately 300 meters on multimode fiber (MMF).
Fiber Type: Multi-mode fiber, using 850nm wavelength laser.
2.LR (Long Range)
Transmission Distance: Supports distances up to 10km.
Fiber type: Single Mode Fiber (SMF), using 1310nm or 1550nm wavelength laser.
3.LRM (Long Reach Multimode)
Transmission Distance: This is a long reach module designed for multimode fiber, supporting transmission distances from 2km to 5.5km, depending on the standard.
Fiber Type: Multimode fiber, using similar wavelengths as the LR module, but with optimized performance for longer multimode links.
4.ER (Extended Range)
Distance: Supports distances up to 40 km.
Fiber Type: Single-mode fiber using 1550nm laser for longer distance transmission.
5.ZR (Ultra Long Range or Zero Replacement Range)
Transmission Distance: Supports distances up to 80km and sometimes even further, up to 100km.
Fiber Type: Single mode fiber, using 1550nm wavelength laser, may require advanced modulation techniques and dispersion compensation to achieve ultra long range transmission.
These modules are usually encapsulated in pluggable modules such as SFP+ or XFP to facilitate connections between network devices. Different transmission distances imply different application scenarios, for example, SR modules are suitable for short-distance connectivity within data centers, while LR, ER and ZR are suitable for longer-distance communication over metropolitan area networks (MAN) or wide area networks (WAN).
In 10Gbps (10 gigabits per second) optical modules, SR, LR, LRM, ER, and ZR are used to describe the different types of modules and their applicable transmission distances and fiber types. The following is a detailed explanation of these abbreviations:
1. SR (Short Range)
Transmission Distance: Typically supports distances of several hundred meters, with a standard link length of approximately 300 meters on multimode fiber (MMF).
Fiber Type: Multi-mode fiber, using 850nm wavelength laser.
2.LR (Long Range)
Transmission Distance: Supports distances up to 10km.
Fiber type: Single Mode Fiber (SMF), using 1310nm or 1550nm wavelength laser.
3.LRM (Long Reach Multimode)
Transmission Distance: This is a long reach module designed for multimode fiber, supporting transmission distances from 2km to 5.5km, depending on the standard.
Fiber Type: Multimode fiber, using similar wavelengths as the LR module, but with optimized performance for longer multimode links.
4.ER (Extended Range)
Distance: Supports distances up to 40 km.
Fiber Type: Single-mode fiber using 1550nm laser for longer distance transmission.
5.ZR (Ultra Long Range or Zero Replacement Range)
Transmission Distance: Supports distances up to 80km and sometimes even further, up to 100km.
Fiber Type: Single mode fiber, using 1550nm wavelength laser, may require advanced modulation techniques and dispersion compensation to achieve ultra long range transmission.
These modules are usually encapsulated in pluggable modules such as SFP+ or XFP to facilitate connections between network devices. Different transmission distances imply different application scenarios, for example, SR modules are suitable for short-distance connectivity within data centers, while LR, ER and ZR are suitable for longer-distance communication over metropolitan area networks (MAN) or wide area networks (WAN).