40Gb/s QSFP+ LR4 Transceiver
Product Features
l 4 CWDM lanes Mux/Demux design
l Up to 11.1Gbps Data rate per wavelength
l Up to 10km transmission on SMF
l Electrically hot-pluggable
l Digital Diagnostics Monitoring Interface
l Compliant with QSFP+ MSA with LC connector
l Case operating temperature range:0°C to 70°C
l Power dissipation < 3.5 W
Applications
l 40G Ethernet
l Data Center and LAN
Standard
l Compliant to IEEE 802.3ba
l Compliant to SFF-8436
l RoHS Compliant.
General DeSCRJPTion
HTFuture’s QSFP+ LR4 is designed to operate over single-mode fiber system using 4X10 CWDM channel in 1310 band and links up to 10km. The module converts 4 inputs channel of 10Gb/s electrical data to 4 CWDM optical signals, and multiplexes them into a single channel for 40Gb/s optical transmission. Reversely, on the receiver side, the module optically de-multiplexes a 40Gb/s input into 4 CWDM channels signals, and converts them to 4 channel output electrical data.
The central wavelengths of the 4 CWDM channels are 1271, 1291, 1311 and 1331 nm. It contains a duplex LC connector for the optical interface and a 38-pin connector for the electrical interface. Single-mode fiber (SMF) is applied in this module. This product converts the 4-channel 10Gb/s electrical input data into CWDM optical signals (light), by a 4-wavelength Distributed Feedback Laser (DFB) array. The 4 wavelengths are multiplexed into a single 40Gb/s data, propagating out of the transmitter module via the SMF. The receiver module accepts the 40Gb/s optical signals input, and de-multiplexes it into 4 CWDM 10Gb/s channels. Each wavelength light is collected by a discrete photo diode, and then outputted as electric data after amplified by a TIA.
The product is designed with form factor, optical/electrical connection and digital diagnostic interface according to the QSFP+ Multi-Source Agreement (MSA) and compliant to 40G QSFP+ LR4 of IEEE 802.3ba.
Absolute Maximum Ratings
|
Parameter |
Symbol |
Min. |
Typ. |
Max. |
Unit |
Note |
|
Storage Temperature |
Ts |
-40 |
- |
85 |
oC |
|
|
Storage Ambient Humidity |
HA |
5 |
- |
95 |
% |
|
|
Operating Relative Humidity |
RH |
- |
- |
85 |
% |
|
|
Power Supply Voltage |
VCC |
-0.3 |
- |
4 |
V |
|
|
Signal Input Voltage |
|
Vcc-0.3 |
- |
Vcc+0.3 |
V |
|
Recommended Operating Conditions
|
Parameter |
Symbol |
Min. |
Typ. |
Max. |
Unit |
Note |
|
Case Operating Temperature |
Tcase |
0 |
- |
70 |
oC |
Without air flow |
|
Power Supply Voltage |
VCC |
3.14 |
3.3 |
3.47 |
V |
|
|
Power Supply Current |
ICC |
- |
|
800 |
mA |
|
|
Data Rate |
BR |
|
10.3125 |
|
Gbps |
Each channel |
|
Transmission Distance |
TD |
|
- |
10 |
km |
|
|
Coupled fiber |
Single mode fiber |
9/125um SMF |
||||
Optical Characteristics
|
Parameter |
Symbol |
Min |
Typ |
Max |
Unit |
NOTE |
|
Transmitter |
|
|
|
|
|
|
|
Wavelength Assignment |
λ0 |
1264.5 |
1271 |
1277.5 |
nm |
|
|
λ1 |
1284.5 |
1291 |
1297.5 |
nm |
|
|
|
λ2 |
1304.5 |
1311 |
1317.5 |
nm |
|
|
|
λ3 |
1324.5 |
1331 |
1337.5 |
nm |
|
|
|
Total Output. Power |
POUT |
|
|
8.3 |
dBm |
|
|
Average Launch Power Per lane |
|
-7 |
|
2.3 |
dBm |
|
|
Spectral Width (-20dB) |
σ |
|
|
1 |
nm |
|
|
SMSR |
|
30 |
|
|
dB |
|
|
Optical Extinction Ratio |
ER |
3.5 |
|
|
dB |
|
|
Average launch Power off per lane |
Poff |
|
|
-30 |
dBm |
|
|
Transmitter and Dispersion Peanlty |
TDP |
|
|
2.3 |
dB |
|
|
RIN |
RIN |
|
|
-128 |
dB/Hz |
|
|
Output Eye Mask |
Compliant with IEEE 802.3ba |
|
||||
|
Receiver |
|
|
|
|
|
|
|
Rx Sensitivity per lane（OMA） |
RSENS |
|
|
-11.5 |
dBm |
1 |
|
Input Saturation Power (Overload) |
Psat |
3.3 |
|
|
dBm |
|
|
Receiver Reflectance |
Rr |
|
|
-26 |
dB |
|
Notes:
1. Measured with a PRBS 231-1 test pattern, @10.325Gb/s, BER<10-12 .
Electrical Characteristics
|
Parameter |
Symbol |
Min |
Typ |
Max |
Unit |
NOTE |
|
Supply Voltage |
Vcc |
3.14 |
3.3 |
3.46 |
V |
|
|
Supply Current |
Icc |
|
|
760 |
mA |
|
|
Transmitter |
|
|
|
|
|
|
|
Input differential impedance |
Rin |
|
100 |
|
Ω |
1 |
|
Differential data input swing |
Vin,pp |
180 |
|
1000 |
mV |
|
|
Transmit Disable Voltage |
VD |
Vcc–1.3 |
|
Vcc |
V |
|
|
Transmit Enable Voltage |
VEN |
Vee |
|
Vee+ 0.8 |
V |
2 |
|
Transmit Disable Assert Time |
|
|
|
10 |
us |
|
|
Receiver |
|
|
|
|
|
|
|
Differential data output swing |
Vout,pp |
300 |
|
850 |
mV |
3 |
|
Data output rise time |
tr |
28 |
|
|
ps |
4 |
|
Data output fall time |
tf |
28 |
|
|
ps |
4 |
|
LOS Fault |
VLOS fault |
Vcc–1.3 |
|
VccHOST |
V |
5 |
|
LOS Normal |
VLOS norm |
Vee |
|
Vee+0.8 |
V |
5 |
|
Power Supply Rejection |
PSR |
100 |
|
|
mVpp |
6 |
898995850
