1.25Gb/s 120km CWDM SFP Transceiver
Advantages
Ø Data-rate of 1.25Gbps operation
Ø 18-Wavelength CWDM DFB LD Transmitter from
Ø 
1270nm to 1610nm, with Step 20nm
Ø Compliant with SFP MSA and SFF-8472
Ø Compatible with SONET OC-24-LR-1
Ø Compatible with RoHS
Ø +3.3V single power supply
Ø Hot-Pluggable SFP Footprint Duplex LC
Ø Operating case temperature Standard: 0°C to +70°C Extended: -20°C to +85°C
Industrial: -40°C to +85°C
Overview
The LNK-CSFP-1Gxx-120 series single mode transceiver is small form factor pluggable module for duplex optical data communications such as Gigabit Ethernet 1000BASE-ZX and Fiber Channel 1x SM-LC-L FC-PI. It is with the SFP 20-pin connector to allow hot plug capability. This module is designed for single mode fiber and operates at a nominal wavelength of CWDM wavelength. There are eighteen center wavelengths available from 1270nm to 1610nm, with each step 20nm.
The transmitter section uses a multiple quantum well CWDM DFB laser and is a class 1 laser compliant according to International Safety Standard IEC-60825. The receiver section uses an integrated InGaAs detector preamplifier (IDP) mounted in an optical header and a limiting post-amplifier IC. The LNK-CSFP-1Gxx-120 series are designed to be compliant with SFF-8472.
Technical Indexes
| Parameter | Symbol | Min. | Typical | Max. | Unit | Note |
| Transmitter Section: |
| Center Wavelength | λc | λ-6 | λ | λ+7.5 | nm | |
| Spectral Width(-20dB) | △λ | | | 1 | nm | |
| Side Mode Suppression Ratio | SMSR | 30 | | | dB | |
| Optical Output Power | Pout | 0 | | +5 | dBm | 1 |
| Optical Rise/Fall Time | tr / tf | | | 260 | ps | 2 |
| Extinction Ratio | ER | 8.2 | | | dB | |
| Eye Mask for Optical Output | Compliant with IEEE802.3z(class 1 laser safety) | |
| Receiver Section: | |
| Optical Input Wavelength | λc | 1260 | | 1620 | nm | |
| Receiver Overload | Pol | -8 | | | dBm | 3 |
| RX Sensitivity | Sen | | | -32 | dBm | 3 |
| RX_LOS Assert | LOS A | -40 | | | dBm | |
| RX_LOS De-assert | LOS D | | | -32 | dBm | |
| RX_LOS Hysteresis | LOS H | 0.5 | | | dB | |
| General Specifications: |
| Data Rate | BR | | 1.063/1.25 | | Gb/s | |
| Bit Error Rate | BER | | | 10-12 | | |
| Max. Supported Link Length on 9/125μm SMF@1.25Gb/s | LMAX | | 120 | | km | |
| Total System Budget | LB | 24 | | | dB |
|
Application
Ø Gigabit Ethernet
Ø Fiber Channel Switch Infrastructure
Ø Router/Server interface
Ø Other optical transmission systems
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1.25Gb/s 120km CWDM SFP Transceiver Images
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