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40G Dual Port Single Mode

40G Dual Port Single Mode


The 1300nm 40G Dual QSFP+ LR4 quad port bypass module is designed as alternative 40Gbps dual QSPF+ LR4 transceiver. Its innovated design able the fiber bypass function become selectable within single PCI card. The 1300nm 40G Dual QSFP+ LR4 quad port bypass module is design expressly for Intrusion Prevention System (IPS) provides complete visibility to network traffic, It also introduces a point of failure should the IPS lose power, cable fail or application freeze.
This interconnecting system include dual ways transceivers offers 4 channels and maximum bandwidth of 40Gbps. It integrates four data lanes in each direction with 40 Gbps aggregate bandwidth. Each lane can operate at 10.3125 Gbps up to 10Km using Single Mode fiber(SMF). The optical interface uses a Dual-LC connector.


.Compliant with 40G Ethernet
.IEEE 802.3ba 40GBASE-LR4 standards
.Compliant with SFF-8436 QSFP+ specification Revision 3.5
.Unretimed XLPPI electrical interface
.Utilizes a standard optical fiber with Dual-LC optical connector
.Link up to 10Km using Single Mode Fiber (SMF).
.Laser Class 1 Product with comply with Requirements of IEC 60825-1 and IEC 60825-2


.40GbE and 40G-IB-QDR / 20G-IB-DDR / 10G-IB-SDR interconnects
.Client-side 40G Telecom connectionss
.4G/8G/10G fiber Channel
.STTA/SAS Storage
.In-Line Sercurity
.Web Acceleration Apliances


Parameter Symbol Min. Typ. Max. Unit Note
Lane center Wavelengths(range) λC 1264.5-1277.5




Total Average Launch Power Pout 8.3 dBm
Average Launch Power, each lane TXPx -7.0 2.3 dBm 1,6
Optical Extinction Ratio ER 3.5 dB
Output Optical Modulation Amplitude,

per lane

TxOMA -4.0 3.5 dBm 1,8
Difference in Power between any Two Lanes in OMA 6.5 dB 1
Transmitter and Dispersion Penalty,

each lane

  TDP 3.5 dB
Relative Intensity Noise RIN -128 dB/Hz 7
Disable Output Optical Power PO-OFF -30 dB
Sidemode Suppression Ratio SSRmin    30 dB
Optical Return Loss Tolerance 20 dB
Transmitter Reflectance   Rt -12 dB
Eye Mask Coordinate:

X1, X2, X3; Y1, Y2, Y3

Specification Value:

0.25, 0.4, 0.45; 0.25, 0.28, 0.4

UI 2
Center Wavelength, each lane λC 1264.5-1277.5




Damage threshold 3.4 dBm
Average Receiver Power, each lane Pin -11.5 2.3 dBm 3
Stressed Sensitivity (OMA) -9.6 dBm 3
Receiver Sensitivity (OMA),each lane -11.5 dBm
LOS Assert PA -28 dBm
LOS De-Assert PD -15 dBm
LOS Hysteresis 1 dB
Total Average Receiver Power Pin 8.3 dBm
Receiver Power (OMA) per Lane 3.5 dBm
Return Loss -26 dB
Vertical eye closure penalty, per lane 1.9 dB
Receive electrical 3 dB upper cutoff frequency, per lane 12.3 GHz
Optical Bypass Switch
Center Wavelength λC 1260 1335 nm
Insertion Loss (Normal Mode) IRL -4.0 0 dB 4
Insertion Loss (Bypass Mode) IRL -4.0 0 dB 5
Return Loss (Bypass Mode) ORL 50 dB


1. Output power is power couples into a 9/125um Single-mode fiber (SMF).
2. Hit ratio= 5×10E-5 per sample.
3. Measured with 10.3125Gbps of PRBS-31 at 10-12 BER.
4. Normal Mode (Bypass Mode Off).
5. Bypass Mode (Normal Mode Off).
6. Minimum value is informative.
7. RIN is scaled by 10*log(10/4) to maintain SNR outside of transmitter.
8. Minimum value is informative, equals min TxOMA with infinite ER and max channel insertion loss.