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Table Of Contents

Single Optical S-16.1 Module, S16.1-1-LC

9.1  Module Description

9.1.1  Power Consumption

9.2  External Interface

9.2.1  Connector Type

9.2.2  Optical Budget

9.2.3  Traffic Alarms


Single Optical S-16.1 Module, S16.1-1-LC


9.1  Module Description

The module contains one optical STM-16 interfaces that meets the S-16.1 specification in ITU-T G.957. The physical connector is a LC connector. The module only supports TDM traffic.

9.1.1  Power Consumption

13 W.

9.2  External Interface

The interface is an optical STM-16 short haul interface, according to clause 5 ITU-T G.957 The definitions of optical parameters and reference points S and R refer to ITU-T G.957. Reference point S means transmit direction while R is the receive direction of the fibre.

9.2.1  Connector Type

The physical connector is a LC connector.

Figure 9-1 Single Optical S-16.1 Module, S16.1-1-LC

9.2.2  Optical Budget

Table 9-1 Optical Budget S-16.1

Parameter
Value

Modulation rate on optical line

2488 380 kbit/s

Wavelength range

1261 - 1360 nm

Transmitter at reference point S
 

Source type

SLM

Maximum -20dB width

1nm

minimum side mode suppression ratio

30dB

Mean launched power (max.)

0dBm

Mean launched power (min.)

-5 dBm

Min. extinction ratio

8.2 dB

Optical path between S and R
 

Attenuation range

0 - 12 dB

Max. tolerable dispersion

NA

Min. optical return loss at S inc. any connectors

24dB

Max. discrete reflectance between S and R

-27dB

Receiver at reference point R
 

Min. sensitivity (BER < 1 in 1010)

-18 dBm

Min. overload

0 dBm

Max. optical path penalty

1 db

Max. reflectance at R

-27dB


9.2.3  Traffic Alarms

Rx direction

Loss of signal (LOS): Traffic Alarm. Optical power of input signal is below receiver sensitivity level.

Loss of lock (LOL):Indicates clock recovery of deserializer is out of lock. Signal must be present for indication to be valid. Indication to be reported as unit failure alarm.

Transmit failure: Laser degradation


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Posted: Fri Sep 14 10:49:36 PDT 2007
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