OC-3/STM-1/OC-12/STM-4 bidirectional PTM optical specification

Overview

The VLNC50/52/55 supports up to two OC-3/STM-1 or OC-12/STM-4 connections, depending upon the type of PTM that is installed. The VLNC55 can also support OC-48/STM-16 connections.

System specifications

The following table lists the system specifications for OC-3/STM-1/OC-12/STM-4 bidirectional PTM interfaces.

Table 10-17: OC-3/STM-1/OC-12/STM-4 bidirectional PTM optical system specifications

System information

OM155/OM622 40km BiDi 1550Tx/1310Rx downstream

OM155/OM622 40km BiDi 1310Tx/1550Rx upstream

Optical Line Rate

622.08 Mb/s, 155.52 Mb/s

Optical Line Coding

Scrambled NRZ

Optical Wavelength

1550Tx/1310Rx

1310Tx/1550Rx

Performance

40 km

Temperature Range

OSP Hardened/Industrial

(−40°C to 85°C)

Transmitter specifications

The table below lists the OC-3/STM-1/OC-12/STM-4 bidirectional PTM transmitter information.

Table 10-18: OC-3/STM-1/OC-12/STM-4 bidirectional PTM optical transmitter information

Transmitter information

OM155/OM622 40km BiDi 1550Tx/1310Rx downstream

OM155/OM622 40km BiDi 1310Tx/1550Rx upstream

Optical Device Temperature Controller

None

IEC 60825 Laser Classification

Class 1

FDA Laser Classification

Class I

Optical Source

Distributed Feed-Back (DFB) Laser

Receiver specifications

The table below lists the OC-3/STM-1/OC-12/STM-4 bidirectional PTM optical receiver information.

Table 10-19: OC-3/STM-1/OC-12/STM-4 bidirectional PTM optical receiver information

Receiver information

OM155/OM622 40km BiDi 1550Tx/1310Rx downstream

OM155/OM622 40km BiDi 1310Tx/1550Rx upstream

Optical Detector

InGaAsP PIN

Faceplate Optical Connector

LC connector

Link budgets

The table below lists the OC-3/STM-1/OC-12/STM-4 bidirectional PTM link budgets.

Table 10-20: OC-3/STM-1/OC-12/STM-4 bidirectional PTM optical specifications and link budgets

Parameter

OM155/OM622 40km BiDi 1550Tx/1310Rx downstream 1

OM155/OM622 40km BiDi 1310Tx/1550Rx upstream 1

Minimum Wavelength

1480 nm

1260 nm

Maximum Wavelength

1580 nm

1360 nm

Maximum Spectral Width (Δλ20)

1.0 nm

1.0 nm

Minimum Side-Mode Suppression Ratio (SSMR)

NA

NA

Maximum Transmitter Power

+2.0 dBm

+2.0 dBm

Minimum Transmitter Power

−3.0 dBm

−3.0 dBm

Maximum Received Power

−3.0 dBm

−3.0 dBm

Minimum Received Power (1x10−10 BER)

−28.0 dBm

−28.0 dBm

System Gain 2

25.0 dB

25.0 dB

Maximum Dispersion

800 ps/nm

|256| ps/nm

Optical Path Penalty 3

1.0 dB

1.0 dB

Minimum Optical Return Loss 4

25.0 dB

25.0 dB

Maximum Receiver Reflectance 4

−14.0 dB

−14.0 dB

Minimum Loss Budget 5

5.0 dB

5.0 dB

Maximum Loss Budget 6

24.0 dB

24.0 dB

Target Distance 7

40 km

40 km

Notes:

  1. All terminology is consistent with GR-253-CORE, Issue 3 and ITU-T G.957. All values are worst-case end of life. Optical specifications meet or exceed equivalent GR-253-CORE and ITU-T G.957 requirements.

  2. The System Gain is Minimum Transmitter Power minus Minimum Received Power.

  3. Optical path penalty includes effects of dispersion, reflection, and jitter that occur on the optical path. The optical path penalty for 1310 nm optics is normally 1.0 dB.

  4. Refer to GR-253-CORE for more information about these parameters.

  5. For all packs where the Minimum Loss Budget (MLB) is 0, no attenuator is required for loopbacks. For all packs where the MLB is greater than 0, an attenuator is required. The value of the LBO must be equal to or greater than the MLB.

  6. The stated maximum loss budgets are assumed to be worst-case values including losses due to splices, connectors, optical attenuators or other passive optical devices, and any additional cable margin.

  7. The target distance assumes that passive optical units are not being used.

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