Cisco Systems 15216 EDFA2 manual Key Features, Wavelength Protection Switching

Chapter 1 Applications

Key Features

F I N A L D R A F T - C I S C O C O N F I D E N T I A L

Figure 1-1 Wavelength Protection Switching

Wavelength is rerouted

CC

Fiber Cut

BDBD

AA

Before After

61990

After a protection switch occurs, the number of wavelengths on each fiber changes. In the example, the number of clockwise wavelengths increases to three, while the number of counter-clockwise wavelengths decreases to one.

1.3 Key Features

Figure 1-2shows a block diagram of the ONS 15216 EDFA2.

Figure 1-2 ONS 15216 EDFA2 Block Diagram

Input

VOA

Isolator

Gain

Flattening

Filter

Isolator

Output

Pump Laser

Pump Laser

Output Monitor

Control Circuit

Microcontroller

71172

5VDC	Rx Tx	External Alarms
	RS232

Cisco ONS 15216 EDFA2 Operations Guide

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