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CT-SFP-DWXX-120
Compatible optical transceiver

SFP 1000BASE-DWDM Channel 17 to Channel 61 100GHz 120km DOM Duplex LC/UPC SMF Optical Transceiver Module for Transmission

Form Factor: SFP
Max Reach: 120KM
Interface Type: LC
Media: SM
Part number CT-SFP-DWXX-120

1.25G DWDM SFP CH16-61 120KM

Carritech Optics 1.25 Gbps DWDM SFP (120 km) is a hot-pluggable, C-band, 100 GHz ITU-grid transceiver combining a DFB laser and APD receiver to deliver long-reach serial links over 9/125 µm SMF with full digital diagnostics.

Quality assured Tested, compliant and backed by lifetime warranty.

Lifetime Warranty
FCC Mark
CE Mark
RoHS Compliant
ISO 9001
ISO 14001
Hardware compatibility

Popular hardware this transceiver is compatible with:

The hardware listed below is a selection of key popular equipment, not a complete compatibility list. This transceiver may also be compatible with many other hardware models. Contact us and we can check the exact hardware you need.

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Product information

CT-SFP-DWXX-120 Details

Review the technical specifications, applications, features, delivery information and warranty coverage for this product.

Specifications

01

The 1.25Gbps DWDM SFP Transceiver is a high-performance optical module engineered for ultra-long-distance data transmission over single-mode fiber (SMF) up to 120 kilometers. Encased in a hot-pluggable SFP form factor, it features a DWDM DFB laser transmitter and an APD photodiode receiver for superior optical performance. Supporting data rates of up to 1.25Gbps, this transceiver is well-suited for applications in DWDM networks, SONET/SDH systems, Gigabit Ethernet, and Fiber Channel communication. It adheres to DWDM SFP MSA and SFF-8472 standards, ensuring compatibility with modern networking equipment.

Operating on a single +3.3V power supply, the transceiver is designed for efficiency and stability. Its metal enclosure minimizes electromagnetic interference (EMI), making it reliable in demanding networking environments. The module supports a 100GHz ITU Grid in the C Band, with wavelength precision maintained within ±0.1nm over its lifetime and under varying temperature conditions. Digital diagnostic monitoring provides real-time insights into operational parameters such as temperature, optical power, and voltage levels, ensuring optimal performance management.

Optical performance is a standout feature, with the transmitter delivering an average output power range of 0dBm to +5dBm and an extinction ratio of 8.2dB. The receiver is highly sensitive, with a minimum input power of -30dBm and an overload threshold of -10dBm, and it operates across a wavelength range of 1270nm to 1610nm. Advanced features like Loss of Signal (LOS) detection and Transmit Disable functionality enable enhanced monitoring and control, offering robust diagnostics and operational flexibility.

Electrically, the transceiver is equipped with a differential input impedance of 100Ω and complies with IEEE 802.3z standards for transmitter output. The integrated 2-wire serial interface provides access to identification and diagnostic information, supporting precise management of the transceiver’s performance and configuration. Additionally, alarm and warning flags alert users to deviations from factory-set operational parameters, ensuring reliability in critical applications.

In summary, the 1.25Gbps DWDM SFP Transceiver is a cutting-edge solution for ultra-long-distance optical communication. Its advanced features, combined with compliance to industry standards, make it an essential component for modern telecommunications and data networking infrastructures.

This SFP MSA-compliant module supports 1.25 Gbps TX/RX operation up to 120 km on single-mode fiber via duplex LC. It operates on 3.3 V, implements SFF-8472 digital diagnostics, and maintains wavelength stability within ±0.1 nm across life and temperature on the C-band 100 GHz ITU grid. Case operating range is 0 °C to +70 °C. Optical performance includes 0 to +5 dBm average TX power, ≥8.2 dB extinction ratio, ≥30 dB SMSR, ≤0.3 nm spectral width (-20 dB), ≤-30 dBm receiver sensitivity, and -10 dBm overload. LOS, TX Disable, and TX Fault are supported, with eye-mask compliance to IEEE 802.3z.

Optical & Link Performance

Parameter Value Notes
Data rate 1.25 Gbps (TX/RX) Serial NRZ
Reach 120 km 9/125 µm SMF
Wavelength ITU-grid, C-band (100 GHz spacing) ±0.1 nm stability
TX laser DWDM DFB
TX power (avg) 0 to +5 dBm
Extinction ratio ≥8.2 dB
SMSR ≥30 dB
Spectral width ≤0.3 nm (-20 dB)
RX type APD
RX sensitivity ≤-30 dBm BER ≤1×10⁻¹², 1550 nm, ER = 9 dB, PRBS 2²³-1
Overload -10 dBm
Input wavelength 1270–1610 nm
LOS assert/de-assert -31 dBm / -40 dBm; hysteresis 0.5–6 dB LOS low = normal
Eye mask IEEE 802.3z compliant

Electrical & Environmental

Parameter Value Notes
Supply voltage 3.13–3.47 V (nom. 3.3 V)
Total module current 300 mA (TX+RX) Excludes termination
Power supply noise 100 mVp-p (100 Hz–1 MHz)
Case temperature 0 °C to +70 °C Operating
Connector Duplex LC
Form factor SFP (hot-pluggable), metal housing Lower EMI
Diagnostics SFF-8472 DDM (Temp, Vcc, TxBias, TxPower, RxPower) A0h/A2h
Control/Status Tx Disable, Tx Fault, LOS; I²C access

Compliance

  • SFP MSA, SFF-8472 digital diagnostics.

  • Class 1 laser (FDA 21 CFR 1040.10/1040.11; IEC/EN 60825-1/-2).

  • EMI/ESD: FCC Part 15 Class B, EN 55022 Class B, IEC/EN 61000-4-2.

  • Safety/EMC/RoHS: IEC/EN 60950 (UL), EN 61000-3, 2002/95/EC.

Applications

02
  • DWDM C-band transport over long-haul point-to-point links up to 120 km.
  • SONET/SDH, Gigabit Ethernet, and Fibre Channel backbones requiring dense wavelength multiplexing and long reach.

Features

03
  • DWDM DFB transmitter + APD receiver for high sensitivity and long-reach performance.
  • 100 GHz ITU-grid, C-band operation with ±0.1 nm wavelength control for reliable multiplexing.
  • SFP MSA hot-pluggable design with duplex LC interface and metal enclosure for reduced EMI.
  • SFF-8472 Digital Diagnostic Monitoring (DDM) with I²C access (A0h/A2h).
  • 3.3 V single supply, 0–70 °C operating case temperature.

Delivery

04

At Carritech, we pride ourselves on our exceptional service and commitment to meeting our customers’ needs. Our extensive range of SFP transceivers, including the CT-SFP-DWXX-120, is designed to cater to various requirements, ensuring that you receive the best solutions for your projects. We understand the importance of timely delivery, and our efficient processes are geared towards providing you with the products you need as quickly as possible. Our dedicated team works tirelessly to ensure that your orders are processed and dispatched promptly, so you can rely on us for swift and reliable service.

We recognise that every project is unique, and our flexible approach allows us to adapt to your specific needs. Whether you require immediate delivery or have more complex requirements, we are here to support you every step of the way. Our commitment to customer satisfaction means that we go above and beyond to ensure that you receive your SFP transceivers in a timely manner, without compromising on quality. Trust Carritech to deliver the solutions you need, when you need them.

Warranty

05

At Carritech Optics, we stand by the quality and reliability of our optical transceivers. That’s why we proudly offer a lifetime warranty on all products as a testament to our commitment to excellence and customer satisfaction.

What Does Our Lifetime Warranty Cover?

Our lifetime warranty provides comprehensive coverage for the entire lifecycle of your optical transceivers, ensuring you experience complete peace of mind when choosing Carritech Optics. The warranty covers:

  • Defects in Materials and Workmanship: If your product experiences any issues related to manufacturing or materials, we’ll repair or replace it free of charge.
  • Performance Assurance: Our optical transceivers are rigorously tested to meet industry standards, and we guarantee they’ll perform as expected in your network environment.

Easy Claims Process

Should you ever need to make a warranty claim, our team is here to assist you. Simply contact our support team with your product details, and we’ll guide you through a quick and hassle-free process to resolve the issue.

Your Network’s Performance, Guaranteed

Carritech Optics is dedicated to providing high-quality optical solutions that you can trust for the long haul. With our lifetime warranty, you can confidently invest in our products, knowing that we’re with you every step of the way.

Datasheet

06

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Extensive Global Inventory

Thousands of optical transceivers in stock and ready to ship, helping you keep your networks running without delay.

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SFP 1000BASE-DWDM 120km