JUNIPER QSFP-40G-LX4 Optical Module Sample Report

JUNIPER has QSFP-40G-LX4 optical module, which can support 40G Ethernet transmission of 2KM in single-mode fiber, 100M in multi-mode OM3 fiber, and 150M in multi-mode OM4 fiber, Moduletek Limited Laboratory has tested the prototype of this product, which is convenient for you to know more about the performance indexes and the effect of the actual use of this product. Performance indicators and the actual machine use effect.

1.Product Introduction

JUNIPER QSFP-40G-LX4 optical module supports 2KM link length on 40G standard single-mode fiber (SMF) OS1, 100M link length on 40G standard multimode fiber (MMF) OM3, 150M link length on 40G standard multimode fiber (MMF) OM4, and supports the commercial temperature range (0～70℃); The official key parameter information and the physical appearance of the module are as follows:

Table 1 Official key parameters of JUNIPER QSFP-40G-LX4 optical modules

Part Number	740-056705
Speed	40 Gigabit Ethernet
Product Type	Optical Transceiver
Connector	Duplex LC
Transmitter wavelengths (range)	Lane 0-1271 nm Lane 1-1291 nm Lane 2-1311 nm Lane 3-1331 nm



Receive lane wavelengths (range	Lane 0-1271 nm Lane 1-1291 nm Lane 2-1311 nm Lane 3-1331 nm



Transmitter output power,each lane (minimum)	-7.0 dBm(per lane
Transmitter output power,each lane(maximum)	SMF 2.3 dBm MMF 4.3 dBm
Transmitter output power,each lane(maximum)	SMF 2.3 dBm MMF 4.3 dBm
Receiver input power,each lane (minimum)	-11.5 dBm(per lane)
Receiver input power,each lane (maximum	SMF 2.3 dBm MMF 4.3 dBm
Receiver input power,each lane (maximum	SMF 2.3 dBm MMF 4.3 dBm
Cable type	SMF MMF MMF
Core size/cladding	9/125 μm 50/125 μm 50/125 μm
Fiber grade	OS1 OM3 OM4
Effective modal bandwidth	—— 2000 MHz x km 4700 MHz x km
Distance	2 km 100 m 150 m
Maximum Power consumption (W)	3.5 W
Operating Temperature (range)	0°C to 70°C

Figure 1 JUNIPER QSFP-40G-LX4 Optical Module Physical Picture

2.Module identification

Connect the QSFP-40G-LX4 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-40G-LX4 Optical Module Upstream Identification

Item	Switch reading information
LINK
Identify
DOM data

3.Module key parameters test

The performance indexes of the QSFP-40G-LX4 sample module on the test board are tested under the condition of 45℃ in the laboratory module shell, and the test results are as follows;

Table 3 JUNIPER QSFP-40G-LX4 optical module performance indicators

Fiber type used	Over OS1 single-mode fiber				OM3 multimode fiber
Parameter	Transmit optical power/dBm	Receiving sensitivity (without fiber)/dBm	Receiving sensitivity (over 2KM single-mode fiber)/dBm	Power Consumption/W	Transmit optical power/dBm	Receive sensitivity (without fiber)/dBm	Receiving sensitivity (over 100M multimode fiber)/dBm	Power consumption/W
Channel 1	-0.41	-16.86	-16.49	2.148	1.18	-17.05	-15.03	2.214
Channel 2	-0.43	-15.97	-15.18		1.05	-15.32	-12.68
Channel 3	0.02	-16.81	-16.12		1.55	-15.81	-15.56
Channel 4	-0.46	-16.19	-15.66		0.99	-16.05	-14.79
Remarks		0 BER	0 BER			0 BER	0 BER

Sample module shell 45°C optical eye diagram test, eye diagram template and parameters are as follows:

Table 4 JUNIPER QSFP-40G-LX4 Optical Module Eye Diagrams

	Eye diagram over OS1 single-mode fiber	Eye diagram over OM3 multimode fiber
Channel 1
Channel 2
Channel 3
Channel 4

Table 5 JUNIPER QSFP-40G-LX4 optical module eye diagram parameters

Fiber type used	Over OS1 single-mode fiber						Over OM3 multimode fiber
Parameter	Extinction ratio (dB)	P-P jitter (ps)	Rise time (ps)	Down time (ps)	Margin value (%)	Temperature(℃)	Extinction ratio (dB)	P-P jitter (ps)	Rise time (ps)	Down time (ps)	Margin value (%)	Temperature(℃)
Channel 1	4.29	29.34	37.3	48.5	21	45	4.33	28.98	36.9	47.2	24	45
Channel 2	4.45	28.8	42.5	45.4	23		4.41	28.44	42.3	44.1	25
Channel 3	4.35	25.2	25.6	48.2	24		4.37	29.51	38	48.4	20
Channel 4	4.12	26.86	41.2	44	25		4.12	28.44	41.2	44.4	25

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

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JUNIPER QSFP-40G-LX4 Optical Module Sample Report