What Is Loopback Cable?
A loopback cable is also known as a loopback plug or loopback adapter, which is a plug used to test physical ports to identify network issues. It provides system test engineers a simple but effective way of testing the transmission capability and receiver sensitivity of network equipment. In a word, it is a connected device that is plugged into a port to perform a loopback test. There are loopback plugs for many different ports, including serial ports, Ethernet ports, and WAN connections.
Fiber Optic Loopbacks are typically used for testing and network diagnostics as well as determining where a fault might lie. With high-density in mind, Geehe designed these Fiber Optic Loopbacks to be compact and can be custom ordered to have different lengths. Available in Multimode, Singlemode, and LC, SC, MPO connector types.
Fiber Optic Loopbacks are compliant with ATM, fast-Ethernet, and gigabit Ethernet.
Features and Benefits:
● Compact plastic shell housing for easy installation and for high
density applications
● Highly stable and reliable optical performance
● High precision alignment with superior optical loss
● Available in LC, SC, MPO, MTRJ connector types
● Available in Multimode and Singlemode fiber type
●Protective dust cover included fr protection during storage
● Compliant with ATM, fast- Ethernet, and gigabit Ethernet
Types of Fiber loopback modules available
The most widespread types of fiber optic loopback modules are FC, SC, LC, and MTRJ connector types. However, each connector type is separated again by fiber type, connector polish type, and attenuation.
Fiber Types
Three types of fiber connectors are available for multimode fibers. They are OM1 62.5/125um, OM2 50/125um, and 10G OM3 50/125um. For single-mode fiber, we have 9/125um loopback module.
For multimode type fibers, only PC polish is available. However, when looking for loopback modules for single-mode fiber, UPC polish and APC polish types modules are available.
Working Wavelength
Moreover, the working wavelength is the other important factor to consider at the time of choosing the correct fiber optic loopback module for your particular usage. Available working wavelengths are 850nm and 1310nm for multimode applications, whereas 1550nm is for single-mode applications.
Applications:
● 40/100G Optical Line Testing
● MPO System Trouble Shooting
● Lab Tests
● Data Centre Infrastructure
● Storage Area Network - Fiber Channel
● Parallel Optics
● Quality Control
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