1490nm 1310nm GPON OLT SFP Class C+++ 7dBm Transceiver Modules

Basic Information
Place of Origin: Shenzhen, China
Brand Name: Gigaopto
Certification: CE, FCC, ROHS, ISO9001, ISO14000, MSDS, REACH, CP65, TUV, UL
Model Number: GTS-SGT21-20DCE
Minimum Order Quantity: 1
Price: negotiable
Packaging Details: Single Package,10 or 20pcs per Tray,30 or 50 or 100pcs per box, 400 or 600pcs per carton
Delivery Time: 1-5 work days
Payment Terms: T/T, L/C
Supply Ability: 50,000pcs/month
Detail Information
Product Name: GPON OLT SFP Module Type: Class C+++ 7dBm
Data Rate(Gb/s): TX2.488Gb/s/RX1.244Gb/s Wavelength(TX/RX): 1490nm/1310nm
Transmission: 20km Connector: SC UPC
DDM: Yes Keywords: +7dBm Class C+++ GPON OLT SFP Transceiver Module
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1310nm Transceiver Modules

Product Description

GPON OLT SFP Class C+++ 7dBm Transceiver Modules





The GIGAOPTO's GTS-SGT21-20DCE is a high performance transceiver module for single fiber communications using a 1490nm continuous-mode transmitter and a 1310nm burst-mode receiver. It is designed to meet ITU G.984.2 Class C++ requirements for optical line terminal (OLT) applications.

The 1490nm DFB LD transmitter has automatic power control (APC) function and temperature compensation circuitry to ensure stable optical power and extinction ratio over all operating temperature range. The transmitter meets Class 1 eye safety per IEC60825 and CDRH standards.

The receiver has a hermetically packaged APD-TIA (trans-impedance amplifier) pre-amplifier and a limiting amplifier with LVPECL compatible differential outputs. It features a Burst Packet Detect (SD) output which is LVTTL compatible. The SD output will come high after receiving the burst packet.

The module provides digital diagnostic information of its operating conditions and status, including transmitting power, laser bias current, module temperature, and supply voltage. Calibration and alarm/warning threshold data are written and stored in the internal memory (EEPROM).

This SFP transceiver module has done sampling test under most famous brands of routers, switches, servers.

The hot swappable GPON SFP transceiver is ideal for Internet Service Provider (ISP) Gigabit Passive Optical Network (GPON) communication links, other optical links.





Product Name GPON OLT SFP Transceiver Type Class C++
Form Type SFP Power Supply Voltage +3.3V
Connector Type SC Simplex Max Distance 20km
Diagnostic Management (DDM) Supported Media Type single mode fiber
Warranty 3-Year Operating Temperature -5~70°C/ -40~85°C
Data Rate (TX) 2.488Gbps Data Rate (RX) 1.244Gbps
Wavelength (TX) 1490nm Wavelength (RX) 1310nm
Power Dissipation <1.5W Total Current (Max) 500mA
TX Output Power (dBm) +6.0~+10.0dBm Sensitivity < -32.0dBm
Extinction Ratio >8.2dB Receiver Saturation >-15dBm
Protocols SFF-8472, ITUT-984.2





  • Single fiber bi-directional data links asymmetric TX 2488Mbps/RX1244Mbps application
  • 1490nm continuous-mode DFB laser transmitter and 1310nm burst-mode APD-TIA receiver
  • Small Form Factor Pluggable package with SC/UPC Connector
  • Operating case temperature Range:Commercial: -5°C~70°C, Industrial: -40°C~85°C
  • Single 3.3V power supply
  • Digital diagnostic monitoring interface
  • Digital burst RSSI function to monitor the input optical power level
  • LVPECL compatible data input/output interface
  • LVTTL transmitter disable control
  • LVTTL transmitter laser fault alarm
  • Fast LVTTL receiver Signal Detect (SD) indication response
  • Low EMI and excellent ESD protection
  • Class I laser safety standard IEC-60825 compliant
  • RoHS6 Compliance




  • Gigabit-capable Passive Optical Networks (GPON)




  • Complies with SFP Multi-Source Agreement (MSA) SFF-8074i
  • Complies with ITU-T G.984.2 Amendment 1
  • Complies with FCC 47 CFR Part 15, Class B
  • Complies with FDA 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated June 24, 2007
  • Complies with SFF-8472
  • Compatible with TR-NWT-000870 4.1 ESD sensitivity classification Class2.
  • Compatible with Telcordia GR-468-CORE



Optical transmitter Characteristics
Parameter Symbol Min Typical Max Unit Notes
Launched Power (avg.) POUT +6 +7 +10 dBm  
Operating Wavelength Range λC 1480   1500 nm  
Spectral Width (-20dB) ∆λ     1 nm  
Side Mode Suppression Ratio SMSR 30        
Extinction Ratio ER 8.2     dB PRBS 223-1+72CID @2.488Gbit/s
Transmitter and Dispersion Penalty TDP     1 dB Transmit on 20km SMF
Optical Output Power after TX Disable PDIS     -39 dBm  
Output Eye Diagram Compliant with ITU-T G.984.2
Transmitter Reflectance       -10 dB  
Optical Receiver Characteristics
Parameter Symbol Min Typical Max Unit Notes
Wavelength Range λC 1260   1360 nm  
Receiver Sensitivity SEN     -32 dBm Note1
Optical Power Input Overload SAT -15     dBm Note1
Dynamic Range   15     dB Figure 1
Receiver Reflectance       -15 dB  
Note 1: PRBS 223-1+72CID @1244Mbps, transmitter is operating, BER ≤1×10-10



Mechanical dimension


Dimensions are in millimeters. All dimensions are ±0.2mm unless otherwise specified. (Unit: mm)

1490nm 1310nm GPON OLT SFP Class C+++ 7dBm Transceiver Modules 0



Ordering information - Gigaopto’s GPON OLT SFP Series(DFB+APD SC Simplex):


P/N Description Class Tx/Rx Type Tx Power Rx Sensitivity Temperature
GTS-SGT21-20DCB GPON OLT SFP B+ DFB/APD +1.5~+5.0dBm < -28.0dBm Com
GTS-SGT21-20DIB GPON OLT SFP B+ DFB/APD +1.5~+5.0dBm < -28.0dBm Ind.
GTS-SGT21-20DCC GPON OLT SFP C+ DFB/APD +3.0~+7.0dBm < -30.0dBm Com
GTS-SGT21-20DIC GPON OLT SFP C+ DFB/APD +3.0~+7.0dBm < -30.0dBm Ind.
GTS-SGT21-20DCD GPON OLT SFP C++ DFB/APD +4.5~+10.0dBm < -31.0dBm Com
GTS-SGT21-20DID GPON OLT SFP C++ DFB/APD +4.5~+10.0dBm < -31.0dBm Ind.
GTS-SGT21-20DCE GPON OLT SFP C+++ / D DFB/APD +6.0~+10.0dBm < -32.0dBm Com
GTS-SGT21-20DIE GPON OLT SFP C+++ / D DFB/APD +6.0~+10.0dBm < -32.0dBm Ind.
Note OEM/ODM Supported, Please Feel Free To Contact Us!



Contact Details

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