Product Overview
• Application: ITU-T G.984.2 GPON OLT B+
• Form Factor: SFP with SC/UPC receptacle
• Transmission:
o Tx: 2.488 Gbps @ 1490 nm (DFB LD, continuous mode)
o Rx: 1.244 Gbps @ 1310 nm (APD-TIA, burst mode)
• Distance: 20 km (single fiber, BiDi)
• Temperature Range:
o Commercial: 0°C to +70°C (CLGPONOLTB+)
o Industrial: -40°C to +85°C (CLGPONOLTB+I)
• Power Supply: Single +3.3 V
• Compliance: RoHS6, SFF-8472 digital diagnostics
Key Features
• Integrated Digital Diagnostic Monitoring (DDM)
• Receiver RESET, Signal Detect, RSSI functions
• Power consumption: = 1.5 W
• Guard and reset timing optimized for GPON OLT applications
Absolute Maximum Ratings
• Storage Temp: –40 to +85°C
• Operating Temp: 0–70°C (C-temp) / –40–85°C (I-temp)
• Supply Voltage: 3.15–3.45 V
• Max Supply Current: 500 mA
Optical Specifications
Transmitter (1490 nm, 2.488 Gbps):
• Central Wavelength: 1480–1550 nm (typical 1490 nm)
• Spectral Width (–20 dB): = 1 nm
• SMSR: = 30 dB
• Output Power: +1.5 to +5 dBm
• Extinction Ratio: = 8.2 dB
• Optical Return Loss Tolerance: –15 dB
• Transmitter Dispersion Penalty: = 1 dB
Receiver (1310 nm, 1.244 Gbps, burst mode):
• Wavelength Range: 1290–1330 nm
• Sensitivity: = –28 dBm (BER < 10?¹°)
• Overload: = –8 dBm
• Dynamic Range: 15 dB
• Damage Threshold: +5 dBm
Electrical Interface
• Data Input Swing (Tx): 200–2000 mVpp differential
• Data Output Swing (Rx): 400–1600 mVpp differential
• Impedance: 100 O differential
• LVTTL Logic: Compatible for control signals (TX_DIS, RX_SD, RSSI, etc.)
Digital Diagnostics (EEPROM, per SFF-8472)
• Monitoring: Temperature, Voltage, Bias Current, Tx Power, Rx Power
• Alarm & Warning thresholds stored in EEPROM
• Supports I²C (2-wire) interface