1.25G DWDM SFP 40KM LC Optical Transceiver

Product Model:
ESDxx12-40D
Data Rate:
2.67G
Wavelength:
1528.77~1563.86nm
Distance:
40KM
Connector:
LC
Fiber Type:
SM
DDM:
YES
Product Origin:
China
Shipping Port:
ShenZhen/HK

Product Detail

1.25G DWDM SFP 40KM LC Optical Transceiver is a high-density, high-performance optical module designed for long-haul metropolitan and regional network applications. Utilizing Dense Wavelength Division Multiplexing (DWDM) technology, it operates on precise ITU-grid wavelengths with narrow channel spacing, enabling the transmission of multiple high-speed data streams over a single fiber strand.

This transceiver supports 1.25Gbps data rates and achieves transmission distances of up to 40 kilometers over single-mode fiber, making it ideal for capacity-optimized network architectures such as enterprise backbone networks, data center interconnects, and telecommunications carrier infrastructures.

Featuring a hot-pluggable SFP form factor and duplex LC interface, it ensures seamless integration with existing network equipment while maintaining strict wavelength stability and low power consumption. With excellent temperature tolerance and superior signal integrity, this DWDM transceiver provides network operators with a scalable, future-proof solution for maximizing fiber capacity and supporting evolving bandwidth demands in modern optical transport networks.

Features

Wavelength selectable to C-band ITU-T grid wavelengths
Suitable for use in 100GHz channel spacing DWDM systems
DWDM SFP MSA Compliant
Dual data-rate of 1.25Gbps/1.063Gbps operation
Up to 2.67Gb/s data rate  OC-24 Long Reach 40KM
Cold Start up Wavelength Compliance
Low Power Dissipation <1.3W Maximum
-5ºC to 70ºC Operating Case Temperature
Diagnostic Performance Monitoring of module temperature, supply Voltages, laser bias current, transmit optical power, receive optical power, Laser temperature and TEC current
Extended link budget with APD receiver technology RoHS compliant and lead free
Interface: LC connector


SFP CWDM 20KM	SFP CWDM 60KM	SFP DWDM 80KM	SFP DWDM 120KM	SFP DWDM 160KM
1.25G	1.25G	1.25G	1.25G	1.25G
20KM	60KM	80KM	120KM	160KM
CWDM	CWDM	DWDM	DWDM	DWDM
LC	LC	LC	LC	LC
SM	SM	SM	SM	SM
DDM	DDM	DDM	DDM	DDM
COM: 0°C ~70°C EXT: -20°C ~85°C IND: -40°C ~85°C	COM: 0°C ~70°C EXT: -20°C ~85°C IND: -40°C ~85°C	COM: 0°C ~70°C EXT: -20°C ~85°C IND: -40°C ~85°C	COM: 0°C ~70°C EXT: -20°C ~85°C IND: -40°C ~85°C	COM: 0°C ~70°C EXT: -20°C ~85°C IND: -40°C ~85°C

FAQ:

Q1: What is a 1.25G SFP transceiver?‌

A1: 1.25G SFP (Small Form-factor Pluggable) is a compact, hot-swappable optic module supporting 1.25Gbps speeds for fiber or copper networks, commonly used in Gigabit Ethernet and Fiber Channel applications.

Q2: What are the typical applications of 1.25G SFP?‌
A2: Gigabit Ethernet (1000BASE-SX/LX/ZX)‌
Fiber Channel (1G/2G/4G)‌
SDH/SONET networks‌

Q3: What is the maximum distance for 1.25G SFP LX?‌
A3: The ‌1000BASE-LX‌ variant supports up to ‌10km‌ over single-mode fiber (SMF), while ‌1000BASE-SX‌ reaches ‌550m‌ over multimode fiber (MMF).

Q4: What wavelengths do 1.25G SFP modules use?‌
A4: SX‌: 850nm (MMF); LX/ZX‌: 1310nm/1550nm (SMF)

Q5: How does a BIDI SFP differ from a standard SFP?‌
A5: Standard SFPs require ‌two fibers‌ (one for TX, one for RX), while BIDI SFPs use ‌one fiber‌ with wavelength-division duplexing (WDM).

Q6: How far can a 1.25G SFP ZX module transmit data?‌
A6: The ‌ZX variant‌ supports extended distances up to ‌80km over single-mode fiber‌, ideal for long-haul applications like telecom backbones.

Q7: Are 1.25G SFP modules compatible with industrial temperature ranges?‌
A7: Yes, many industrial-grade modules operate in ‌extreme temperatures from -40°C to 85°C‌, ensuring reliability in harsh environments like outdoor networks.

Q8: What is the role of Digital Diagnostics Monitoring (DDM/DOM) in 1.25G SFP?‌
A8: DDM/DOM provides real-time tracking of parameters like temperature and optical power, enabling proactive maintenance and fault detection for network stability.

Q9: Can 1.25G SFP modules connect to CWDM or DWDM systems?‌
A9: Yes, specialized ‌CWDM and DWDM variants‌ exist for wavelength division multiplexing, allowing efficient bandwidth usage in metro or data center networks.

Q10: Why choose BIDI over standard SFP for FTTH?‌
A10: BIDI SFPs ‌halve fiber usage‌, reducing infrastructure costs in passive optical networks (PON).