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Contact: Ms. Ophelia Feng
Company: Shenzhen Gigaopto Technology Co., Ltd.
4/F, Building 1, High-tech Industrial Park, No.1 Dezheng Road, Shilong, Shiyan Subdistrict, Bao'an District, Shenzhen 518108, China
Shenzhen 518108
Phone: 86-755-23722507
Fax: 86-755-23722507
E-Mail: Send Inquiry NEW MEMBER
Date/Time:  3/29/23 3:27 GMT

OLT GPON SFP Transceiver Class B+ TX 1490nm 2.5G RX 1310nm 1.25G 20km SC DD

TX-2.5G/RX-1.25G GPON Transceiver Class B+ (SMF, 1490nm-TX/1310nm-RX, 20km, SC


The GIGAOPTO's GTS-SGT21-20DCB 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 B+
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).

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


Form Factor GPON SFP Power Supply Voltage 3.3V
Connector/Polish SC/UPC Maxim Distance 20km
DDM Supported Media SMF
Warranty 3 Years Temperature Commercial /Industrial
TX Data Rate 2.488Gbps RX Data Rate 1.244Gbps
TX Wavelength 1490nm RX Wavelength 1310nm
Power Consumption <1.5W Total Current 450mA
Transmitter Type DFB Receiver Type APD
TX Optical Power +1.5~+5.0dBm RX Sensitivity < -28.0dBm
Extinction Ratio >8.2dB Receiver Overload >-8dBm
Protocols SFF-8472, ITUT-984.2


Single fiber bi-directional data links asymmetric TX 2488Mbps/RX1244Mbps
1490nm continuous-mode DFB laser transmitter and 1310nm burst-mode APD-TIA
Small Form Factor Pluggable package with SC/UPC Connector
0 to 70°C operating temperature
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

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

P/N Date Rate (Gb/s) Wavelength (nm) Class Tx Power Rx
Sensitivity Temperature
GTS-SGT21-20DCB TX-2.488/RX-1.244 TX-1490nm/RX-1310nm B+
+1.5~+5.0dBm < -28.0dBm Com
GTS-SGT21-20DIB TX-2.488/RX-1.244 TX-1490nm/RX-1310nm B+
+1.5~+5.0dBm < -28.0dBm Ind.
GTS-SGT21-20DCC TX-2.488/RX-1.244 TX-1490nm/RX-1310nm C+
+3.0~+7.0dBm < -30.0dBm Com
GTS-SGT21-20DIC TX-2.488/RX-1.244 TX-1490nm/RX-1310nm C+
+3.0~+7.0dBm < -30.0dBm Ind.
GTS-SGT21-20DCD TX-2.488/RX-1.244 TX-1490nm/RX-1310nm C++
+4.5~+10.0dBm < -31.0dBm Com
GTS-SGT21-20DID TX-2.488/RX-1.244 TX-1490nm/RX-1310nm C++
+4.5~+10.0dBm < -31.0dBm Ind.
GTS-SGT21-20DCE TX-2.488/RX-1.244 TX-1490nm/RX-1310nm C+++ / D
+6.0~+10.0dBm < -32.0dBm Com
GTS-SGT21-20DIE TX-2.488/RX-1.244 TX-1490nm/RX-1310nm C+++ / D
+6.0~+10.0dBm < -32.0dBm Ind.
Note OEM/ODM Supported, Please Feel Free To Contact Us!


All of GIGAOPTO's GTS-SGT21-20DCB SFP optical transceiver modules are open
sourced, can be coded to be fully compatible with worldwide popular brands'
devices, e.g. HUAWEI MA5603T, HUAWEI MA5608T, HUAWEI MA5680T, HUAWEI MA5800T,
ZTE ZXA10 C300, ZTE ZXA10 C320, ZTE C600, Alcatel-Lucent 7360, Nokia 7360, C-
DATA, VSOL, BDCOM. Please refer to the following table for detailed
compatibility, please feel free to contact us.

Corresponding Compatible Brand/Part Number
Brand Part Number Brand Part Number
Gigaopto GTS-SGT21-20DCB Alcatel-Lucent 3FE53441AA 01
ZTE GPON-OLT-Class B+ Calix 100-01782
ZTE 33030100152 Dasan MXK-GPON-SFP-B+-RSSI
Ubiquiti UF-GP-B+ Cisco SFP-GPON-B
BDCOM OLT-GSFP-B+ Calix 100-01836
Broadex D24364-SSCB SuperXon SOGP4321-PSGB
WTD RTXM167-522
OLT GPON SFP Transceiver Class B+ TX 1490nm 2.5G RX 1310nm 1.25G 20km SC DD
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