Ascent Communication Technology

100G QSFP28 ZR4 1310 nm 80 km

Ascent’s QSFP28-100G-LP80 is designed for 80km optical communication applications. This module contains 4-lane optical transmitter, 4-lane optical receiver and module management block including 2 wire serial inter-face. The optical signals are multiplexed to a single-mode fiber through an industry standard LC connector. Ascent’s QSFP28-100G-LP80 is MSA compatible 100GBASE-ZR4 QSFP28 (Quad Small Form-Factor Pluggable 28) transceiver, operating over a pair of single- mode optical fibers with four independent optical communication lanes separated from each other using LAN WDM technology. It is widely deployed by Internet Service Provider (ISP) Fiber to the Home Aggregation and Backbone, Mobile Operator Core Networks and Mobile Backhaul and Data Center networking site interconnections. The module uses EML cooled 4x25Gb/s LAN WDM TOSA (1295.56, 1300.05, 1304.58, 1309.14nm) laser transmitters and 4x25Gb/s SOA+PIN receivers. It has a minimum guaranteed optical budget of 27 dB (with host FEC), which in most cases is enough to reach 80 km distance (with host FEC) and 40 km distance (without host FEC) using a single-mode cable. The module supports DDM/DOM optical diagnostics, which provide diagnostic information about the present operating conditions. Additionally, the module supports a KR4 FEC (Forward Error Correction) function which will help the receiving side detect and correct bit errors and improve the overall quality of the link.

• Support line rates from 103.125 Gb/s

• Lane bit rate 25.78 Gb/s 100GE

• Up to 80km transmission with KR4-FEC

• LAN WDM EML laser and PIN receiver with SOA

• Support Multi-Pin function with IntL/RxLOSL and LPMode/TxDIS

• High speed I/O electrical interface (CAUI-4)

• I2C interface with integrated Digital Diagnostic monitoring

• QSFP28 MSA package with duplex LC connector

• Single +3.3V power supply dissipation

Commercial：< 4.5W

Industrial：<6W

• Temperature Range:

Commercial：0°C to +70°C

Industrial：-40°C to +85°C

• Complies with EU Directive 2015/863/EU

Absolute Maximum Ratings

Parameter	Symbol	Min.	Typ.	Max.	Unit
Storage Temperature	Ts	-40		85	°C
Maximum Supply Voltage	Vcc	0.5		3.6	V
Operating Relative Humidity	RH			85	%

Recommended Operating Environment

Parameter	Symbol	Min.	Typ.	Max.	Unit	Notes
Operating Case Temperature	T_op	0		70	°C	QSFP28-100G-LP80
Operating Case Temperature		-40		85	°C	Q28-100G-LP80A
Power Supply Voltage	V_cc	3.13	3.3	3.47	V
Power Supply Current	I_CC			1.36	A	QSFP28-100G-LP80
Power Supply Current				1.81	A	Q28-100G-LP80A
Maximum Power Dissipation	PD			4.5	W	QSFP28-100G-LP80
Maximum Power Dissipation				6		Q28-100G-LP80A
Aggregate Bit Rate	BRAVE		103.125		Gb/s
Lane Bit Rate	BRLANE		25.78125		Gb/s
Transmission Distance	T_D			80	km
Coupled fiber	Single mode fiber					9/125um SMF

Optical Characteristics

Parameter	Symbol	Min.	Typical	Max.	Unit	Notes
Transmitter
Signaling Speed per Lane			25.78125		Gbps
Lane Wavelength	L0	1294.53	1295.56	1296.59	nm
	L1	1299.02	1300.05	1301.09	nm
	L2	1303.54	1304.58	1305.63	nm
	L3	1308.09	1309.14	1310.19	nm
Total Average Launch Power	P_T			10.5	dBm	1
Average Launch Power per Lane,	P_avg	-4.3		4.5	dBm	1
OMA, Each Lane	P_OMA	-1.3		4.5	dBm	1
Difference in launch power between any two lanes(Average and OMA) between any Two Lanes (OMA)	P_tx, diff			3	dB
Average Output Power (Laser Turn Off)	P_off			-30	dBm
Side Mode Suppression Ratio	SMSR	30			dB
Extinction Ratio	ER	4			dB
RIN20OMA	RIN			-130	dB/Hz
Optical Return Loss Tolerance	TOL			20	dB
Transmitter Reflectance	R_T			-12	dB
Optical Eye Mask	{0.25,0.4, 0.45, 0.25, 0.28, 0.4}				%	2
Receiver
Signaling Rate, Each lane			25.78125		Gbps
Center Wavelength Lane 0	λ0	1294.53	1295.56	1296.59	nm
Center Wavelength Lane 1	λ1	1299.02	1300.05	1301.09	nm
Center Wavelength Lane 2	λ2	1303.54	1304.58	1305.63	nm
Center Wavelength Lane 3	λ3	1308.09	1309.14	1310.19	nm
Damage threshold , Each lane	Pdamage	5.5			dBm
Los Assert	LosA	-40			dBm
Los De-assert	LosDA			-28	dBm
Los Hysteresis	LosH	0.5			Db

Note:

  1.       The optical power is launched into SMF.
2.       Measured with a PRBS 231-1 test pattern @25.78125, Hit ratio≤5E^-5.
3.       Measured with a PRBS 231-1 test pattern @25.78125 Gb/s, BER≤5E^-5.

Electrical Characteristics

High-Speed Signal: Compliant to CAUI-4 (IEEE 802.3bm)

Low-Speed Signal: Compliant to SFF-8679.

Parameter	Symbol	Min	Typ	Max	Unit	Note
Transmitter (Module Input)
Data Rate, Each Lane			25.78125		Gbps
Differential Voltage pk-pk	V_pp			900	mV	1
Common Mode Voltage	V_cm	-350		2850	mV
Transition Time	Trise/Tf all	10			ps	2
Receiver (Module Output)
Data Rate, Each Lane			25.78125		Gbps
Common Mode Noise, RMS	Vrms			17.5	mV
Differential Output Voltage Wwing	V_out, pp			900	mV
Eye Width	EW15	0.57			UI
Eye Height	EH15	228			mV
Differential Termination Resistance Mismatch				10	%	1
Transition Time	Trise/Tf all	12			ps