Product Details
SFP-WDM-SM-0220A SFP-WDM-SM-0220B sfp Optical Module 1.25G 20KM T1310/R1550 Factory Supply
Product Features
Support ITU-T G.984.2 GPON OLT B+ application
Single fiber bi-directional data links with symmetric 2.488Gbps Tx and 1.244Gbps Rx
1490nm continuous-mode transmitter with DFB LD
1310nm burst-mode receiver with APD-TIA
wire interface for integrated digital diagnostic Monitoring
Receiver RESET, Signal Detect, RSSI function indication (RESET, RX_SD, RSSI)
SFP package with SC/UPC receptacle optical interface
Single +3.3V power supply
Operation case temperature -40~85°C for industrial and 0~70°C for commercial
RoHS6 compliance
Operating Condition
Parameter | Unit | Min. | Typical | Max. |
Storage Temperature | °C | -40 | | 85 |
Operating Case Temp for C-temp | °C | 0 | | 70 |
Operating Case Temp for I-temp | °C | -40 | | 85 |
Operating Relative Humidity | % | 5 | | 95 |
Power Supply Voltage | V | 3.15 | 3.3 | 3.45 |
Supply Current | mA | | | 500 |
Bit Rate for Tx | Gbps | 2.488 |
Bit Rate for Rx | Gbps | 1.244 |
Characteristics All performance is specified at whole working temperature and conditions
Parameter | Unit | Min. | Typical | Max. |
Transmitter |
TX Central Wavelength | nm | 1480 | 1490 | 1500 |
Spectral Width (-20dB) | nm | | | 1 |
Side Mode Suppression Ratio (SMSR) | dB | 30 | | |
Mean Launched Power | dBm | 1.5 | | 5 |
Mean Launched Power (TX Off) | dBm | | | -45 |
Extinction Ratio | dB | 8.2 | | |
Optical Return Loss Tolerance | dB | -12 | | |
Transmitter and dispersion Penalty | dB | | | 1 |
Transmitter Mask(PRBS223-1&2.488G) | Compliant With ITU-T G.984.2 |
Receiver |
Receive Wavelength | nm | 1290 | 1310 | 1330 |
Sensitivity(PRBS223-1 & 1.244G,ER=10,BER<10-10) | dBm | | | -28 |
Overload(PRBS223-1&1.244G,ER=10,BER<10-10) | dBm | -8 | | |
Receiver Burst Mode Dynamic Range | dB | 15 | | |
Damage Threshold for Receiver | dBm | 5 | | |
SD Assert Level | dBm | | | -30 |
SD De-assert Level | dBm | -45 | | |
SD Hysteresis | dB | 0.5 | | 6 |
WDM Filter isolation to 1550nm | dB | 38 | | |
WDM Filter isolation to 1650nm | dB | 35 | | |
Electrical Interface Characteristics |
Data Input Swing Differential/TX | mV | 200 | - | 2000 |
Data Output Swing Differential/RX | mV | 400 | | 1600 |
Date Differential Impedance | Ω | 90 | 100 | 110 |
LVTTL Output High | V | 2.4 | | Vcc |
LVTTL Output Low | V | 0 | | 0.4 |
LVTTL Input High | V | 2.0 | | Vcc+0.3 |
LVTTL Input Low | V | 0 | | 0.8 |
Timing Characteristics |
Guard Time (Tg) | ns | 25.6 | | |
Reset Pulse Width (Tr) | ns | | | 12.8 |
Reset Delay (Trd) | ns | | | 12.8 |
Receiver Preamble Time (Tp) | ns | | | 140 |
SD Assert Time (TSDA) | ns | | | 100 |
SD De-assert Time (TSDD) | ns | | | 12.8 |
RSSI Trigger Delay (Ttd) | ns | 25 | | |
RSSI Trigger Pulse Width (Tw) | ns | 500 | | |
Internal I2C Delay (Twait) | us | | | 500 |


Company Profile
Shenzhen Huayixin Fiber Optic Technology is a leading company in developing and manufacturing advanced
fiber optic products,mainly make fiber optic indoor and outdoor
cable, CPRI waterproof jumper, MPO/MTP jumper , standard fiber
optic jumper and PLC Splitter. Huayixin win the honorary title of
National High-tech enterprise by Shenzhen government in 2019.
With years of experiences in the fiber optic industry, our factory
is fully equipped over 3600 square meters and more than 26 non dust
production lines .About 200 well-trained staff and engineers are
contributing to our proud products. We have 6 production lines for
fiber optic cable, 3 high standard MPO/MTP jumper assembly lines, 6
production lines for standard jumper and 8 PLC Splitter production
lines.3 production lines for fast connectors.
The most advanced imported polishing equipment and testing
instruments enable our products have super quality, such as Senko
polishing machine, interferometer, automatic cleaning machine and
EXFO ,VIAVI OTDR ,JGR and so on.
All of our optical products are RoHS compliant and Huayixin also
obtained ISO9001, ISO14001 certification. Our high quality products
and outstanding service win the customer from all the
world,Carefiber exports its fiber optical products to overseas
market such as to France, Germany, England, America, Mexico,Brazil
,South Africa ,Ecuador ,Peru etc. Huayixin fiber optic is looking
forward to cooperate with you.