400GBASE-LR8 QSFP Transceiver Module QSFP-DD 1310nm 10KM Single Mode Duplex LC

Parameter

Symbol

Min.

Typical

Max.

Unit

Notes

Wavelength L0

λ_C0

1272.55

1273.55

1274.54

nm

Wavelength L1

λ_C1

1276.89

1277.89

1278.89

nm

Wavelength L2

λ_C2

1281.25

1282.26

1283.27

nm

Wavelength L3

λ_C3

1285.65

1286.67

1287.68

nm

Wavelength L4

λ_C4

1294.53

1295.56

1296.59

nm

Wavelength L5

λ_C5

1299.02

1300.06

1301.09

nm

Wavelength L6

λ_C6

1303.54

1304.59

1305.63

nm

Wavelength L7

λ_C7

1308.09

1309.14

1310.19

nm

Side Mode Suppression Ratio

SMSR

30

-

-

dB

Total Average Launch Power

AOP_T

-

-

13.2

dBm

Average Launch Power, each lane

AOP_L

-2.8

-

5.3

dBm

1

Outer Optical Modulation Amplitude (OMAouter), each Lane

T_OMA

0.2

-

5.7

dBm

Difference in Launch Power between any two Lanes (OMAouter)

D_{T_OMA}

-

-

4

dB

Launch Power in OMAouter minus TDECQ,
each lane for ER >= 4.5dB

T_OMA-TDECQ

-1.2

-

-

dBm

Launch Power in OMAouter minus TDECQ,
each lane for ER < 4.5dB

T_OMA-TDECQ

-1.1

-

-

dBm

Transmitter and Dispersion Eye Closure for PAM4 (TDECQ), each lane

TDECQ

-

-

3.1

dB

Average Launch Power of OFF Transmitter,
each lane

T_OFF

-

-

-30

dBm

Extinction Ratio

ER

3.5

-

-

dB

RIN_15.1OMA

RIN

-

-

-132

dB/Hz

Optical Return Loss Tolerance

ORL

-

-

15.1

dB

Transmitter Reflectance

T_R

-

-

-26

dB

2