Single Mode QSFP+ 40G Optical Transceiver 1330nm 40km DOM Duplex LC

Basic Information
Place of Origin: SZ China
Brand Name: OLKOPTO
Certification: ISO9001,ISO14001,OHSAS18001
Model Number: OLSQXX4XL-CD40
Minimum Order Quantity: 1pcs
Packaging Details: Individual package OR 10 pcs/ pallet OR 20 pcs/ pallet
Delivery Time: 3-5 working days
Payment Terms: TT/Net 30days
Supply Ability: 80-100k per month
Part Number: OLSQXX4XL-CD40 Data Rate: 40G
Transmission Distance: 40km Wavelength: 1270~1330nm
High Light:

QSFP+ 40G Optical Transceiver


40km 40G Optical Transceiver


40g qsfp sr4

Single Mode QSFP+40G Optical Transceiver 1330nm 40km DOM Duplex LC


Extreme QSFP+40G ER Compatible 1270~1330nm 40km DOM LC SMF Optical Transceiver Module


Product Features

● Duplex LC receptacle optical interface

● Single +3.3V power supply

● 4 CWDM lanes MUX/DEMUX design

● Up to 11.2Gb/s data rate per wavelength

● Up to 40km transmission on single mode fiber (SMF)

● Low power dissipation(Max:3.5W)

● Built in digital diagnostic function

● Operating case temperature range:0℃ to 70℃




● 40GBASE-ER4 Ethernet Links

● Infiniband QDR and DDR interconnects

● Client-side 40G Telecom connections



● Compliant with 40G Ethernet IEEE802.3ba and 40GBASE-ER4 Standard

● Compliant with QSFP+ MSA hardware specifications

● Compliant with RoHS


Functional Description

Olinkcom’s OLSQXX4XL-C(I)D40 is a transceiver module designed for 40km optical communication applications. The design is compliant to 40GBASE-ER4 of the IEEE P802.3ba standard. The module converts 4 inputs channels (ch) 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 as members of the CWDM wavelength grid defined in ITU-T G694.2. It contains a duplex LC connector for the optical interface and a 148-pin connector for the electrical interface. To minimize the optical dispersion in the long-haul system, single-mode fiber (SMF) has to be applied in this module.

The product is designed with form factor, optical/electrical connection and digital diagnostic interface according to the QSFP+ Multi-Source Agreement (MSA). It has been designed to meet the harshest external operating conditions including temperature, humidity and EMI interference.



Signaling rate, each lane Gb/s 10.3125    
Four Lane Wavelength Range λ1 1264.5 1271 1277.5 nm  
  λ2 1284.5 1291 1297.5 nm  
  λ3 1304.5 1311 1317.5 nm  
  λ4 1324.5 1331 1337.5 nm  
Total launch power       10.5 dBm  
Average launch power, each lane Pavg -2.7   +4.5 dBm 2
Optical modulation amplitude, each lane (OMA)2 OMA -0.7   5 dBm  
Difference in launch power between any two lanes (OMA)       4.7 dB  
Extinction ratio ER 5.5     dB  
Side-mode suppression ratio SMSR 30     dB  
Transmitter and dispersion penalty, each lane TDP     2.2 dB  
Optical return loss tolerance       20 dB  
Transmitter reflectance3       –12 dB  
Transmitter eye mask {X1, X2, X3, Y1, Y2, Y3}   {0.25,0.4,0.45,0.25,0.28,0.4}    
Receive Rate for Each Lane Gb/s 10.3125    
Damage Threshold, each Lane THd -6       3

Average Receive Power for Each


Pin -20.2   -1.5 dBm 4, 5

Receive Power In OMA for Each


PinOMA     -1 dBm  

Difference in Receive Power in

OMA between Any Two Lanes

      5.5 dBm  

Receiver Sensitivity in OMA for

Each Lane

SOMA     -18 dBm 6

Stressed Receiver Sensitivity in

OMA for Each Lane

      -15.8 dBm 7, 8
LOS Assert   -35     dBm  
LOS Deassert       -20 dBm  


More details of our products:

High Reliable Optical Components and Excellent Design

1.DLB laser and PIN photodiode

2.Thick Gold Finger


3.Plating Hard Gold Shell


Cost-effective and Reliable Transmission


Comprehensive Performance Test with our Advanced Equipment
  • Certified and tested on the automatic quality control system, to ensure the high performance in the actual working environment.Fully Tested for compatibility in our matched switches.

Our Packing & Labeling:

  • Anti-static box
  • Individual package
  • 10pcs/pallet
  • 20pcs/pallet

Our mission is to provide cost effective optical transceiver SFP, SFP+,DAC, QSFP etc with 100% reliable quality, quick lead-time and great after sale service.


Our all modules have 3 years warranty!

Contact Details

WhatsApp : +8618695187695