1.What is wdm 2. What is looping 3. What is sdh and pdh 4. How may types of patchcods 5.what is power meter

Question

Accepted Answer

WDM stands for Wavelength Division Multiplexing, a technology used in fiber optic communication to transmit multiple signals simultaneously.

WDM is a technique that combines multiple optical signals onto a single fiber by using different wavelengths of light.
It increases the capacity and efficiency of fiber optic networks.
Looping refers to the process of connecting a cable or circuit back to itself, often used for testing or troubleshooting purposes.
SDH (Synchronous Digital Hierarchy) and PDH (Plesiochronous Digital Hierarchy) are both transmission technologies used in telecommunications.
SDH provides a standardized way of multiplexing and transporting digital signals over optical fiber.
PDH is an older technology that uses fixed time slots to multiplex multiple signals.
Patchcords are cables used to connect optical devices or components in a fiber optic network.
There are different types of patchcords, such as single-mode and multi-mode patchcords.
A power meter is a device used to measure the power or energy of an optical signal.
It is commonly used in fiber optic testing and maintenance to ensure proper signal levels.