Cisco Systems 15501 manual Optical Specifications, Description Specification

Chapter 1 Product Overview

Optical Specifications

Optical Specifications

Table 1-1lists the Cisco ONS 15501 optical specifications and Table 1-2lists the Alarms thresholds. For other technical specifications, see Appendix B, “Technical Specifications.”

Table 1-1 Cisco ONS 15501 Optical Specifications

Description	Specification
Wavelength range	1530 to 1563 nm
Input power range	-29 to 0 dBm
Saturated output power	17.3 ± 0.3 dBm
Noise figure	< 6.0 dB
Nominal gain	+17 dB
Gain flatness	< 1.5 dB
Settable variable gain	17 dB to 7 dB1
Automatic gain control accuracy	± 1.0 dB
Transient suppression response time	50 microseconds
Backward ASE (amplified spontaneous emission) power	< -25 dBm
PMD (polarization mode dispersion)	< 0.6 ps
Mode of operation	Unidirectional
Optical return loss	> 27 dB
Input and output isolation	> 30 dB
Polarization sensitivity	< 0.5 dB

1. Gain flatness is <1.5 dB for 17-13 dB; <2.0 dB for 7-13 dB.

Table 1-2 Alarm Thresholds

	Minimum Value	Factory	Max Value
	Programmable	Default	Programmable
Optical In Mean	-10	-10	0
Optical In Trig	0	20	20
Signal Mean	-6	0	0
Signal Trig	0	17.5	18
Gain Mean1	7	17.5	17.5
Gain Trig	0	1	2
Temp Mean	20	30	40
Temp Trig	20	25	30

1. Gain Mean is the only settable parameter that effects system performance.

	Cisco ONS 15501 User Guide
1-2	78-14134-02, Release 2.0