Table Of Contents

Single Optical S-16.1 Module

8.1  Functional Description of Module

8.2 Power Consumption

8.3 External Interface

8.4 Connector Type

8.5 Optical Budget

8.6 Traffic Alarms

Single Optical S-16.1 Module

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8.1  Functional Description of Module

The S16.1-1-LC 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 supports TDM traffic only.

8.2 Power Consumption

The power consumption of the S16.1-1-LC module is 13 W.

8.3 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 refers to the transmit direction and R refers to the receive direction of the fiber.

8.4 Connector Type

The physical connector is a LC connector.

Figure 8-1 Single Optical S-16.1 Module, S16.1-1-LC

8.5 Optical Budget

Table 8-1 Optical Budget S-16.1

Parameter	Value
Modulation rate on optical line	2488 380 kbps
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

8.6 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 de-serializer 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

Posted: Fri Sep 14 11:09:44 PDT 2007
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