Technical Overview
Form Factor: SFP+ (20-pin, hot-pluggable)
Application: Combo OLT transceiver supporting both XGS-PON and GPON
Standard Compliance:
• ITU-T G.984.5 (2014) / Amd.2 (2020) GPON
• ITU-T G.9807.1 XGS-PON (Class C+)
General Specifications
• Function: Combination of XGS-PON OLT and GPON OLT optics
• Fiber: Single fiber, bi-directional
• Reach: 40 km
• Connector: SC/UPC/APC
• Power supply: +3.3 V
• Operating case temperature:
– Industrial (I): –40 ~ +85 °C
• Power consumption:
– 3 W (C-temp)
– 3.5 W (I-temp)
• RoHS: With exemptions 7C(I)
Optical Specifications
Transmitter (XGS-PON, 9.953 Gbps)
• Wavelength: 1575–1580 nm (typ. 1577 nm, SOA+EML laser)
• Output power: +8 to +10 dBm
• Extinction ratio: = 8.2 dB
• SMSR: = 30 dB
• Tx OFF power: = –39 dBm
Transmitter (GPON, 2.488 Gbps)
• Wavelength: 1480–1500 nm (typ. 1490 nm, DFB laser)
• Output power: +7 to +10 dBm
• Extinction ratio: = 8.2 dB
• SMSR: = 30 dB
• Tx OFF power: = –40 dBm
Receiver (XGS-PON, 9.953 Gbps)
• Wavelength: 1260–1280 nm (typ. 1270 nm, burst-mode APD-TIA)
• Sensitivity: = –32 dBm
• Saturation: –10 dBm
• Signal detect assert: –30 dBm
• Signal detect de-assert: –45 dBm
Receiver (GPON, 2.488 Gbps)
• Wavelength: 1260–1280 nm (typ. 1270 nm, burst-mode APD-TIA)
• Sensitivity: = –35 dBm
• Saturation: –10 dBm
Receiver (GPON, 1.244 Gbps)
• Wavelength: 1290–1330 nm (typ. 1310 nm, burst-mode APD-TIA)
• Sensitivity: = –35 dBm
• Saturation: –12 dBm
Electrical Specifications
• Transmitter input swing: 100 – 850 mVp-p
• Input impedance: 100 O differential
• Tx disable voltage:
– Logic Low: 0–0.8 V
– Logic High: 2.4–3.3 V
• Receiver output swing: 300 – 800 mVp-p
• Signal detect voltage:
– Low: 0–0.8 V
– High: 2.4–3.3 V
Diagnostics (DDM)
• Voltage: 3.14–3.47 V, accuracy ±3 %
• Bias current: 0–130 mA, accuracy ±10 %
• Tx Power (9.953 G): +5 to +8 dBm, accuracy ±2 dB
• Tx Power (2.488 G): +3 to +7 dBm, accuracy ±2 dB
• Rx Power (9.953 G): –31 to –10 dBm, accuracy ±3 dB
• Rx Power (1.244 G): –32 to –12 dBm, accuracy ±3 dB
Mechanical
• Package: SFP+ 20-pin form factor
• Hot-pluggable design
• Connector: SC/UPC
Typical Applications
• Central office OLT equipment
• XGS-PON / GPON Combo deployments
• FTTH access networks
• Telecom operator upgrades from GPON to XGS-PON