Datasheet

Data Sheet

DWDM Line and Optical Specifications

Table 3 shows the detailed DWDM optical and line specifications for the optical interface.

Table 3. Additional Specifications: DWDM Line Interface

Specification DWDM Line Interface

DWDM Line Interface

Bit Rate 10.3125 ±100 ppm

11.0957 ±100 ppm

Nominal Wavelengths (lambdaTnom) C-band unit: full tunable from 1529.55 to 1561.84

Spectral Range (lambdaTmin to lambdaTmax) 1530 to 1561 nm

Spectral Width at 20 dB (lambda delta20) ≤25 GHz

Optical Transmitter

Type Lithium Niobate external modulator

Output Power (PTmin to PTmax) +3 dBm, +6 dBm

Required Optical Return Loss, Minimum (ORLmin) 27 dB

Extinction Ratio, Minimum (reminx) >10.5 dB

Laser Safety Class 1

Optical Receiver

Type Avalanche photo diode (APD)

Chromatic Dispersion Tolerance (DLRmax) Up to ±1200 ps/nm (2 dB penalty)

Minimum BER (BERmin)

FEC Off 10E–12

FEC On 10E–15

EFEC On 10E–15

Reflectance Between Far-End Tx and Near-End Rx (Maximum) –27 dB

Receiver Reflectance (Maximum) –14 dB

Input Wavelength Bandwidth (lambdac_rx) 1290 nm to 1605 nm

Connector Type (Tx/Rx) LC, duplex (shuttered)

Table 4 shows optical performance, with OSNR given in 0.5-nm Res BW.

Table 4. Optical Performance

OSNR FEC Type Pre-FEC BER Post-FEC BER Input Power Sensitivity CD Tolerance

23 dB OFF <10E(–12) – –8 to –20 dBm C band ±1200 ps/nm

19 dB OFF <10E(–12) – –8 to –20 dBm C band ±1000 ps/nm

19 dB OFF <10E(–12) – –8 to –22 dBm C band –

10 dB GFEC <10E(–5) <10E(–15) –8 to –18 dBm ±800 ps/nm

8.5 dB GFEC <10E(–5) <10E(–15) –8 to –18 dBm –

19 dB EFEC <7x10E(–4) <10E(–15) –8 to –26 dBm ±800 ps/nm

19 dB EFEC <7x10E(–4) <10E(–15) –8 to –27 dBm –

7 dB EFEC <7x10E(–4) <10E(–15) –8 to –20 dBm ±800 ps/nm

5 dB EFEC <7x10E(–4) <10E(–15) –8 to –20 dBm –

This is not a specification. Chromatic Dispersion Tolerance is listed as an indication of the maximum

chromatic dispersion that the interface can tolerate only in the specified case quoted in Table 4 with 23 dB of

OSNR.