What is difference between SDH and DWDM?

Related questions

1. What is the difference between transceiver and transponder?
2. What is satellite communication transponder?
3. What is the use of MUX in networking?
4. What is DWDM equipment?
5. How does DWDM network work?
6. What is SDH and PDH in telecom?
7. What is Roadm in DWDM?
8. What is SDH and how it works?
9. What is transport network in telecom?
10. Who invented DWDM?

Tags

1. #transmission
2. #multiplexing
3. #optic
4. #hierarchy
5. #unnecessary
6. #technology
7. #fiber
8. #dense
9. #replace
10. #synchronous
11. #digital
12. #standard
13. #carry
14. #wavelength
15. #division
16. #cables