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Optical Characteristics (Top=0~70℃, Vcc=3.14~3.47V)

(Tested under recommended operating conditions,unless otherwise noted)

Parameter	Symbol	Unit	Min		Typ			Max		Notes
Transmitter
Signaling rate, each lane	DRpl	Gb/s	25.78125 ±100 ppm						1
Center Wavelengthe	λ	nm	840	850			860
RMS Spectral Width		nm		0.6
Average launch power, each lane	Pavg	dBm	-8.4				2.4
Optical modulation amplitude, each lane (OMA)	OMA	dBm	-6.4				3
Extinction ratio	ER	dB	2
Average Launch Power of OFF Transmitter, per Lane	RIN	dBm					-30
Encircled Flux	FLX	dBm	>86% at 19 um <30% at 4.5 um
Optical return loss tolerance		dB					12
Transmitter eye mask {X1, X2, X3, Y1, Y2, Y3}			{0.3,0.38,0.45,0.35,0.41,0.5}						2
Receiver
Receive Rate for Each Lane	DRpl	Gb/s	25.78125 ±100 ppm						3
Four Lane Wavelength Range	λ	nm	840			860
Overload Input Optical Power	Pmax	dBm	3.4
Average Receive Power for Each Lane	Pin	dBm	-10.3				2.4		4
Receiver Sensitivity(OMA)per lane	Psens	dBm					-5.2
Recevier Reflectance	Rfl	dB					-12
Receiver Eye MaskDefinition {X1, X2, X3, Y1, Y2,Y3}		{0.28,0.5,0.5,0.33,0.33,0.4}							5
Los De-Assert	Pd	dBm					-13
Los Assert	Pa	dBm	-30
Loss Hysteresis	Pd-Pa	dBm	0.5

Notes:

1. Transmitter consists of 4 lasers operating at a maximum speed of 25.78125Gb/s ±100ppm each.

2. Hit Ratio 1.5 x 10-3 hits/sample.

3. Receiver consists of 4 photodetectors operating at a maximum speed of 25.78125Gb/s ±100ppm each.

4. Minimum value is informative only and not the principal indicator of signal strength.

5. Hit Ratio 5 x 10-5 hits/sample.

100Gb/s QSFP28 SR4 100m

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