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100G MM LC Duplex CWDM4
    Publish time 2022-10-10 16:09    

100G QSFP28 Multimode LC Duplex  CWDM4 

100G MM LC Duplex CWDM4

100G QSFP28 SWDM4  Optical Tranceiver   Multimode Duplex LC  

Distance：

OM3-75Meters

OM4-100Meters

OM5-150Meters


The 100G QSFP28 SWDM4 transceiver modules are designed for use in 100G Ethernet links over duplex multimode fiber. Four channels/lanes in the 850-940nm region @ 25.78Gbps to transport the Ethernet signal. Digital diagnostics functions are available via an I2C interface, as specified by the QSFP28 MSA.

Applications
100G Ethernet over Duplex MM

Feature
Compliant with QSFP28 MSA
Compliant with SWDM MSA
Compliant with IEEE802.3bm CAUI-4
Hot-pluggable QSFP28 form factor
4x25Gb/s 850mm VCSEL-based transmitter
Supports 103.1Gbps aggregate bit rate
Power dissipation<3.5W
Maximum link length of 150m on OM5 multimode Fiber
Case temperature range of 0°C to 70°C
Duplex LC receptacles
CAUI-4 electrical interface
RoHS compliant


1. Absolute Maximum Ratings


Parameter

Symbol

Min

Max

Units

Storage Temp Range

Ts

-40

+85

℃

Supply Voltage

Vcc

-0.5

3.6

V

Relative Humidity

RH

15%

85%



2. Operating Conditions


Parameter

Symbol

Min

Max

Units

Case Temp-Operating

Tcase

0

70

℃

Supply Voltage

Vcc

3.14

3.46

V

Power Consumption

P


3.5

W

Link Distance on OM3 Fiber



75

M

Link Distance on OM4 Fiber



100

M

Link Distance on OM5 Fiber



150

M


3. Optical Characteristics


Transmitter Parameter

Lane

Min

 Typical

Max 

Unit

Note

Signaling rate, each lane


25.78125±100ppm

Gb/s


Lane Wavelength Range 

Lane0
Lane1
Lane2
Lane3

844
874
904
934


858
888
918
948

nm


Modulation Format


NRZ



Difference in launch power between any two lanes




4.5

dBm


RMS Spectral width




0.59

nm

1

Optical Modulation Amplitude (OMA), each lane


-5.5


3

dBm

2

Average Launch Power per Lane @ TX Off State




-30

dBm


Launch Power in OMA minus TDEC

Lane0
Lane1
Lane2
Lane3

-7
-7
-7.4
-7.7



dBm


Transmitter and Dispersion Eye Closure

Lane0
Lane1
Lane2
Lane3



4
4
4.4
4.8

dB

3

Extinction Ratio 


2



dB


Optical Return Loss Tolerance 




12

dB


Encircled Flux


 ≥86% at 19 um

≤30% at 4.5 um

4

Transmitter eye mask definition {X1, X2, X3, Y1, Y2, Y3}
Hit ratio 1.5x10-3 hits per sample


{0.3,0.38,0.45,0.35,0.41,0.5}


Notes:
1. RMS spectral width is the standard deviation of the spectrum.
2. The normative lowest value of OMA for a compliant transmitter is ‘Launch power in OMA minus TDEC, each
lane (min)’ plus the actual value of ‘TDEC’, but with a value of at least ‘OMA, each lane (min)’.
3. TDEC is calculated from the measured TDECm using the methods in 3.6. TDECm is measured following the
method in IEEE 802.3 clause 95.8.5 using a 12.6 GHz bandwidth reference receiver for all lanes.
4. If measured into type A1a.2 or type A1a.3 50 um fiber in accordance with IEC 61280-1-4.


Receiver Parameter

Lane

Min

 Typical

Max 

Unit

Note

Signaling rate, each lane


25.78125±100ppm

Gb/s


Lane Wavelength Range 

Lane0

844


858

nm


Lane1

874


888


Lane2

904


918


Lane3

934


948


Modulation Format


NRZ



Damage Threshold


4.4



dBm


Average Receive Power, each lane

Lane0

-9.5


3.4

dBm


Lane1

-9.4



Lane2

-9.4



Lane3

-9.4



Receiver Power, each lane (OMA)




3

dBm


Receiver Reflectance




-12

dB


unStressed Receiver Sensitivity(OMA) 

Lane0
Lane1
Lane2
Lane3



-8.2
-8.4
-8.6
-8.8

dBm

1

RX_Los_Assert


-30



dBm


RX_Los_De-ASSERT 




-12

dBm


RX_Los_Hysteresis


0.5



dBm


1.unstressed sensitivity at BER of 5E-5(pre FEC)