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400GBASE-ER8 QSFP-DD 1310nm 40km Transceiver

Model:LNK-QDD-400G-ER8-40

Ø Compliant with IEEE std 802.3cnTM-2019:
- 400GBASE-ER8 optical interface
- 400GAUI-8 electrical interface

Ø Compliant with QSFP-DD MSA HW Rev 5.1 with duplex LC connector

Ø Compliant with QSFP-DD CMIS Rev 4.0

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400GBASE-ER8 QSFP-DD 1310nm 40km Transceiver

Transmitter Optical Specifications


Parameter	Symbol	Min.	Typical	Max.	Unit	Notes
Wavelength L0	λC0	1272.55	1273.55	1274.54	nm
Wavelength L1	λC1	1276.89	1277.89	1278.89	nm
Wavelength L2	λC2	1281.25	1282.26	1283.27	nm
Wavelength L3	λC3	1285.65	1286.67	1287.68	nm
Wavelength L4	λC4	1294.53	1295.56	1296.59	nm
Wavelength L5	λC5	1299.02	1300.06	1301.09	nm
Wavelength L6	λC6	1303.54	1304.59	1305.63	nm
Wavelength L7	λC7	1308.09	1309.14	1310.19	nm
Side Mode Suppression Ratio	SMSR	30	-	-	dB
Total Average Launch Power	AOPT	-	-	14.6	dBm
Average Launch Power, each lane	AOPL	-0.6	-	5.6	dBm	1
Outer Optical Modulation Amplitude (OMAouter), each Lane	TOMA	2.4	-	6.4	dBm
Difference in Launch Power between any two Lanes (OMAouter)	DT_OMA	-	-	4	dB
Launch Power in OMAouter minus TDECQ, each lane	TOMA-TDECQ	1	-	-	dBm
Transmitter and Dispersion Eye Closure for PAM4 (TDECQ), each lane	TDECQ	-	-	3.4	dB
TDECQ –10log10(Ceq)	-	-	-	3.4	dB
Average Launch Power of OFF Transmitter, each lane	TOFF	-	-	-30	dBm
Extinction Ratio	ER	6	-	-	dB
RIN15OMA	RIN	-	-	-132	dB/Hz
Optical Return Loss Tolerance	ORL	-	-	15	dB
Transmitter Reflectance	TR	-	-	-26	dB	2

Note 1: Average launch power, each lane (min) is informative and not the principal indicator of signal strength

Note 2: Transmitter reflectance is defined looking into the transmitter

Receiver Optical Specifications


Parameter	Symbol	Min.	Typical	Max.	Unit	Notes
Wavelength L0	λC0	1272.55	1273.55	1274.54	nm
Wavelength L1	λC1	1276.89	1277.89	1278.89	nm
Wavelength L2	λC2	1281.25	1282.26	1283.27	nm
Wavelength L3	λC3	1285.65	1286.67	1287.68	nm
Wavelength L4	λC4	1294.53	1295.56	1296.59	nm
Wavelength L5	λC5	1299.02	1300.06	1301.09	nm
Wavelength L6	λC6	1303.54	1304.59	1305.63	nm
Wavelength L7	λC7	1308.09	1309.14	1310.19	nm
Damage Threshold, each Lane	AOPD	-3.4	-	-	dBm
Average Receive Power, each Lane	AOPR	-18.6	-	-4.4	dBm
Receive Power (OMAouter), each Lane	OMAR	-	-	-3.6	dBm
Difference in Receive Power between any two Lanes (OMAouter)	DR_OMA	-	-	5.8	dB
Receiver Reflectance	RR	-	-	-26	dB
Receiver Sensitivity (OMAouter), each Lane	SOMA	-	-	Max(–16.1, SECQ – 17.5)	dBm	1
Stressed Receiver Sensitivity (OMAouter), each Lane	SRS	-	-	-14.1	dBm	2
Conditions of stressed receiver sensitivity test:
Stressed eye closure for PAM4 (SECQ), lane under test	-	-	3.4	-	dB
SECQ – 10log10(Ceq),lane under test	-	-	-	3.4	dB
OMAouter of each aggressor lane	-	-	-8.3	-	dBm