The 40G QSFP+ LR4 is a 4×10G single-mode fiber, hot pluggable optical transceiver.
The optical connectivity is based on two Singlemode Fiber (SMF) LC connectors, one for Tx and one for Rx. The Tx and Rx each consist of 4 10GB/s CWDM channels, whose wavelengths are in the 1300nm range. The QSFP+ LR4 transceiver is designed for applications with a reach up to 10km.
Feature
High density interconnectivity
Supports 40Gb/s data rate links up to 10km on a Singlemode Fiber (SMF)
Industry standard QSFP+ form factor Single 3.3V Power Supply
Applications
Data Center interconnections 40GBASE Ethernet links 40G Telecom connections QDR/DDR Infiniband links
General Description
Compliant with QSFP+ SFF-8436 MSA for mechanical, low speed electrical and 2-wire serial management interface for control and real-time monitoring
Supports 40 Gbps data rates links from 2m to 10km over a standard SMF
QSFP+ footprint (Quad Small Form-factor Pluggable) with 2 unidirectional LC SMF optical connector receptacles 38 pin hot pluggable edge connector electrical interface based on QSFP+ MSA
The transmitter consists of a retimed quad input, 4 un-cooled CWDM DFB lasers operating on the ITU G.694.2 wavelength grid at 1271, 1291, 1311 and 1331nm and multiplexed into a single SMF output
The receiver consists of a CWDM de-multiplexer, a quad photodiode receiver with a limiting electrical interface and output amplitude control
Provides Bias and Transmit Power Monitoring (TPM) for each of the 4 transmitter channels Provides RSSI Monitoring for each of the 4 receiver channels
Provides monitoring of the voltage supplies and case temperature Provides Module Present and Interrupt signals
Input control pins for Module Select, Module Reset and Low Power Modes Supports operation for a case temperature of 0°C to +70°C
Includes customized coding option for module security implementation
Absolute Maximum Ratings
Parameter | Symbol | Min | Max | Units |
Storage Temperature Range | T STG | -40 | +85 | ⁰C |
Supply Voltage | V CC | 0 | 4 | V |
Maximum Average Input Optical Power per Lane (Damage Threshold) | P IN | 3.3 | | dBm |
Relative Humidity | RH | 10% to 90% non-condensing |
Operating Conditions
Parameter | Symbol | Min | Typical | Max | Units |
Case Temperature-Operating | T CASE | 0 | 25 | 70 | ⁰C |
Supply Voltage | V CC | 3.14 | 3.3 | 3.46 | V |
Power Consumption | P DISS | | | 3.5 | W |
Power Consumption-LP Mode | P DISS-LP | | | 1.5 | W |
Optical Characteristics
Transmitter Optical Specifications
Transmitter Parameter | Lane | Min | Typical | Max | Units |
Signaling rate, each lane | 10.3125 ± 100ppm | Gb/s |
Lane Wavelength Range | Lane 0 | 1264.5 | 1271 | 1277.5 | nm |
Lane 1 | 1284.5 | 1291 | 1297.5 | nm |
Lane 2 | 1304.5 | 1311 | 1317.5 | nm |
Lane 3 | 1324.5 | 1331 | 1337.5 | nm |
Average Optical Power per lane | | -7 | | 2.3 | dBm |
Total Average Launch Power | | | | 8.3 | dBm |
Optical Modulation Amplitude (OMA), each lane | | -4 | | 3.5 | dBm |
Transmitter and Dispersion Penalty (TDP) each lane | | | | 2.6 | dB |
Average Launch Power per Lane @ TX Off State | | | | -30 | dBm |
Extinction Ratio | | 3.5 | | | dB |
Relative Intensity Noise (OMA) | | | | -128 | dB/Hz |
Side-Mode Suppression Ration (SMSR) | | 30 | | | dB |
Optical Return Loss Tolerance | | | | 20 | dB |
Transmitter Reflectance | | | | -12 | dB |
Transmitter Output Power Monitoring Accuracy | | -3 | | 3 | dB |
Transmitter Eye Mask Definition {X1, X2, X3, Y1, Y2, Y3} | {0.25, 0.4, 0.45, 0.25, 0.28, 0.4} |
Receiver Optical Specifications
Receiver Parameter | Lane | Min | Typical | Max | Units |
Signaling rate, each lane | 10.3125 ± 100ppm | Gb/s |
Lane Wavelength Range | Lane 0 | 1264.5 | 1271 | 1277.5 | nm |
Lane 1 | 1284.5 | 1291 | 1297.5 | nm |
Lane 2 | 1304.5 | 1311 | 1317.5 | nm |
Lane 3 | 1324.5 | 1331 | 1337.5 | nm |
Damage Threshold | | 3.3 | | | dBm |
Average Receive Power, each lane | | -13.7 | | 2.3 | dBm |
Receiver Power, each lane (OMA) | | | | 3.5 | dBm |
Receiver Reflectance | | | | -26.0 | dB |
Receiver Sensitivity (OMA) per lane (10.3125Gb/s @PRBS 231-1 and BER=1-12 | | | | -11.5 | dBm |
RSSI Accuracy | | -3.0 | | 3.0 | dB |
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