JUNIPER has model QSFP-100G-SR4 optical module products, can support 100G Ethernet transmission 100M in multi-mode fiber, Moduletek Limited Laboratory of the product samples for testing, to facilitate a further understanding of the product's performance indicators and the effect of the actual machine use.
1. Product Description
        JUNIPER QSFP-100G-SR4 optical module supports 100M link length on 100G standard multimode fiber (MMF) OM4, and supports commercial temperature range (0~70℃); the official key parameter information and the physical appearance of the module are as follows:
Table 1 JUNIPER QSFP-100G-SR4 optical module official key parameters
  Part Number
740-068634
  Speed
4x25 Gigabit Ethernet,100 Gigabit Ethernet
  Connector
MPO-12
  Product Type
Optical Transceiver
  Transmitter wavelengths ( range )
840 nm to 860 nm
  Transmitter output power , each lane ( minimum )
-8.4 dBm
  Transmitter output power , each lane ( maximum )
2.4 dBm
  Receiver input power , each lane ( minimum )
-10.3dBm
  Receiver input power , each lane ( maximum )
2.4 dBm
  Cable type
MMF
  Core size / cladding
50/125 μm
  Fiber grade
OM3 OM4
  Effective modal bandwidth
2000MHzxkm 4700MHzx km
  Distance
70m 100m
  Maximum Power consumption ( W )
3.5W
  Operating Temperature (range)
0°C to 70°C

 
JUNIPER QSFP-100G-SR4 Optical Module Physical Picture
Figure 1 JUNIPER QSFP-100G-SR4 Optical Module Physical Picture
2. Module on-board identification
        Connect the QSFP-100G-SR4 module to JUNIPER QFX5200-32C switch, the module can be normally LINK, the port indicator is on; the module information can be normally recognized by the switch, such as the module type, order number, serial number, etc.; you can read the DOM data, and the DOM data are within the threshold range, no alarm phenomenon.
Table 2 JUNIPER QSFP-100G-SR4 Optical Module Upstream Recognition
Item
 Switch reading information
LINK
Identify
DOM data

3. Module key parameters testing
        The performance indexes of the QSFP-100G-SR4 sample module on the test board are tested under the condition of 45°C in the laboratory module enclosure, and the test results are as follows;
Table 3 JUNIPER QSFP-100G-SR4 optical module performance indicators
  Parameter
Channel 1
Channel 2
Channel 3
Channel 4
Remarks
  Transmit optical power
-0.92dBm
-0.99dBm
-0.88dBm
-0.98dBm
 
  Receiving sensitivity (without fiber)
-10.82dBm
-11.17dBm
-11.15dBm
-10.56dBm
5E-5 BER
  Receive sensitivity (over 100m fiber)
-10.53dBm
-10.82dBm
-11.06dBm
-10.45dBm
5E-5 BER
  Power consumption
2.397W

    The sample module enclosure was tested at 45°C optical eye diagram with the following eye diagram template and parameters:
Table 4 JUNIPER QSFP-100G-SR4 Optical Module Eye Diagrams
 
Eye diagram
 
Eye diagram
Channel 1
Channel 3
Channel 2
Channel 4
 
Table 5 JUNIPER QSFP-100G-SR4 optical module eye diagram parameters
  Parameter
 Channe1
 Channe2
 Channe3
 Channe4
  Temperature (℃)
45
45
45
45
  Extinction ratio (dB)
3.76
3.87
3.89
3.88
  P-P jitter (ps)
8.47
7.92
8.05
9.94
  Rise Time (ps)
16.45
16.13
16.58
16.54
  Downtime (ps) 
20.26
19.93
19.3
19.22
  Margin value (%) 
38.1
44.2
41.6
41.9

        From the actual test situation, the module's key parameters and indexes are in line with JUNIPER's official claims.
        Moduletek Limited is at your service.
        If you have any questions about the above content, you can contact us by Email : web@moduletek.com