Technical Overview
Form Factor: SFP+ (hot-pluggable)
Application: XGS-PON ONU (Optical Network Unit)
Standard Compliance: ITU-T G.9807 (XGS-PON), SFP+ MSA (SFF-8431)
Connector: SC/UPC
Transmission Distance: up to 20 km over SMF
Power Supply: +3.3 V
Operating Temperature: 0 to +70 °C (Commercial)
General Features
• Single fiber XGS-PON ONU transceiver
• 1270 nm burst-mode DFB transmitter, 9.953 Gbps
• 1577 nm continuous-mode APD/TIA receiver, 9.953 Gbps
• Digital diagnostic monitoring (DDM) with internal calibration
• Low EMI and excellent ESD protection
• RoHS compliant
Optical & Electrical Specifications
Transmitter (1270 nm, 9.953 Gbps, burst-mode DFB)
• Data rate: 9.953 Gb/s
• Output power: +4 to +9 dBm
• Center wavelength: 1260–1280 nm (typ. 1270 nm)
• Spectrum width (–20 dB): = 1 nm
• SMSR: = 30 dB
• Tx OFF power: = –45 dBm
• Extinction ratio: = 6 dB
• Dispersion penalty: = 1.5 dB
• Burst enable/disable time: = 30 ns
• Tx burst indication ON/OFF: = 200 ns
Receiver (1577 nm, 9.953 Gbps, APD/TIA)
• Operating wavelength: 1575–1580 nm (typ. 1577 nm)
• Sensitivity: = –28.5 dBm
• Overload: –8 dBm
• Max input power: +5 dBm
• LOS Assert: –39 dBm
• LOS De-assert: –30 dBm
• LOS hysteresis: 0.5–5 dB
• Crosstalk (1310?1577 nm): = –47 dB
• Optical isolation: = 35 dB
Electrical Characteristics
• Power supply: 3.15–3.45 V
• Current: = 450 mA
• Tx data input swing: 200–1600 mV
• Input differential impedance: 100 O (±10 %)
• Rx data output swing: 340–850 mV
• Tx_Burst Enable: Low = 0.8 V, Disable = 2.0 V
• Tx Fault: Low = Normal, High = Fault
• Tx_SD: High = Tx ON, Low = Tx OFF
• RX_LOS: Low = Signal detected, High = Loss of signal
Absolute Maximum Ratings
• Storage temperature: –40 to +85 °C
• Operating case temperature: 0 to +70 °C
• Relative humidity: 5–95 %
• Receiver damage threshold: +5 dBm
DDM (Digital Diagnostics)
• Temperature: 0 to 70 °C (accuracy ±3 °C)
• Voltage: 3.0 – 3.6 V (accuracy ±3 %)
• Bias current: 0 – 131 mA (accuracy ±10 %)
• Tx power: +4 to +9 dBm (accuracy ±2 dB)
• Rx power: –30 to –7 dBm (accuracy ±3 dB)
Mechanical & Pinout
• Package: SFP+ form factor, SC/UPC connector
• Standard 20-pin SFP+ pinout
• Hot-pluggable electrical interface
Typical Applications
• XGS-PON ONU for FTTH networks
• Broadband access equipment
• Central office ONU deployments