Feature Compliant with QSFP28 MSACompliant with SWDM MSACompliant with IEEE802.3bm CAUI-4Hot-pluggable QSFP28 form factor4x25Gb/s 850mm VCSEL-based transmitterSupports 103.1Gbps......

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100G QSFP28 SWDM4 Optical Transceiver

100G QSFP28 SWDM4

Description

The 100G QSFP28 SWDM4 transceiver modules are designed for use in 100G Ethernet links over duplex multi mode 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.

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 Lane1 Lane2 Lane3	844 874 904 934		858 888 918 948	nm
Modulation Format		NRZ
Damage Threshold		4.4			dBm
Average Receive Power, each lane	Lane0 Lane1 Lane2 Lane3	-9.5 -9.4 -9.4 -9.4		3.4	dBm
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)

4. Digital Diagnostic Monitoring Specifications

Parameters	Unit	Specification
Temperature Monitor	℃	± 3
Voltage Monitor	V	± 5 %
I_bias Monitor	mA	± 10 %
Received Power (Rx) Monitor	dB	± 3.0
Transmit Power (Tx) Monitor	dB	± 3.0

5. Electrical Characteristics

Transmitter electrical input signal characteristics(TP1)	Min	Typical	Max	Unit
Signaling rate per lane (range)	25.78125 ± 100 ppm			GBd
Differential input return loss	Equation (83E–5)			dB
Differential to common mode input return loss	Equation (83E–6)			dB
Differential termination mismatch			10	%
Module stressed input test	See 83E3.4.1
Differential pk-pk input voltage tolerance	900			mV
DC common mode voltage	-350		2850	mV
Single ended voltage tolerance range	-0.4		3.3	V
Receiver electrical output signal characteristics(TP4)	Min	Typical	Max	Unit
Signaling rate per lane (range)	25.78125 ± 100 ppm			GBd
AC common-mode output voltage (RMS)			17.5	mV
Differential output voltage			900	mV
Eye width	0.57			UI
Eye height, differential	228			mV
Vertical eye closure			5.5	dB
Differential output return loss	Equation (83E–2)			dB
Common to differential mode conversion return loss	Equation (83E–3)			dB
Differential termination mismatch			10	%
Transition time (20% to 80%)	12			ps
DC common mode voltage	-350		2850	mV