400G QSFP-DD ZR+ Coherent Transceiver

Description
The 400G QSFP-DD ZR Transceiver is a high performance, cost effective module for optical data communication applications from 100G to 400G. The 400G QSFP-DD ZR+ is designed to 100G/200G long haul and 300G/400G Metro IP over DWDM applications without inline chromatic dispersion compensation.
The 400G QSFP-DD ZR+ is a C-Band optical frequency tunable coherent optical module, combines 7nm coherent DSP ASIC functionality with best in class ultra-narrow line-width tunable lasers, high speed modulators and high responsively coherent receivers to deliver high performance at 100G DP-QPSK / 200G DP-QPSK / 300G DP-8QAM / 400G DP-16QAM modulation format. With one VOA inside the TX optical path the out output optical power has 4dB attenuation window.
The 400G QSFP-DD ZR+ coherent transceiver Compliant with the OIF QSFP-DD MSA. Digital diagnostics functions are available via an I2C interface as specified by the QSFP-DD MSA. Mechanical dimensions, connectors and footprint conform to QSFP-DD MSA. The module is 18.35mm x93.26mmx8.50mmin size and hot pluggable by 76 PIN PAD and host connector.

Features
● Compliant with QSFP-DD MSA, Type 2B package
● Compliant with Open ZR+ MSA and OIF 400ZR MSA, support OFEC and CFEC FEC
● Line rate 100G/200G/300G/400G
● Client rate 1/2/3/4x100GbE or 1x400GbE
● C-band tunable, supports 100/75/50GHz grid spacing, support 0.1GHz fine turning
● TX VOA inside, with 4dB attenuation window
● Support ingress LF hold-off time configure
● Support hitless firmware upgrade
● Compact size (18.35 mm x 93.26 mm x 8.50 mm)
● Duplex LC connector
● Operating case temperature: 0℃ to 75°C
● Single 3.3 V power supply
● Typical power consumption 21W (400GbE),maximum power consumption 22.5W(400GbE)
● RoHS 2 compliant

Applications
● Edge DCI with extended Reach or with OLP protection
● IP Over Metro or Long Haul DWDM

Compliance
● Open ZR+ MSA 2.0 and OIF-400ZR-02.0
● OIF-CMIS-05.2
● IA OIF-C-CMIS-01.2
● QSFP-DD-Hardware-Rev6.3
● IEEE Std 802.3-2018

Absolute Maximum Ratings
Table1-Absolute Maximum Ratings

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Storage temperature	Ts	-40		85	℃
Power supply	Vcc	-0.3	3.3	3.6	V	not damaged
Relative humidity	RH	5		85	%	Non-condensing
Receiver damage threshold	PRdmg	10			dBm	Total optical power
ESD Sensitivity				1000	V

Recommended Operating Conditions
Table2-Recommended Operating Conditions

Parameter		Symbol	Min.	Typ.	Max.	Unit	Note
Operating Case Temperature		TC	0		75	℃
Power supply voltage		VCC	3.135	3.3	3.465	V
		ICC			7.2	A	Note1
Maximum sustained peak Current(<500ms)					7.4	A
Maximum Instantaneous peak current(<50us)					9	A
Electro-Static discharge		ESD			1000	V
Power Consumption(400ZR+)		PD		21	22.5	W	Note1
Relative humidity		RH	15		85	%
Client Mode	400G (400ZR)		1 x 400GAUI-8
			4 x 100GAUI-2
	400G (400ZR+)		1 x 400GAUI-8
			4 x 100GAUI-2
	300G (300ZR+)		3 x 100GAUI-2
	200G (200ZR+)		2 x 100GAUI-2
			2 x CAUI-4				Note2
	100G (100ZR+)		1 x 100GAUI-2
			1 x CAUI-4				Note2
Transmissi onDistance	400G (OIF 400ZR app code 0x01)				120	Km
	400G (OIF 400ZR app code 0x02)				30~40
	400G (400ZR+)				450
	300G (300ZR+)				600
	200G (200ZR+)				1000
	100G (100ZR+)				2000
Power Supply Noise		Vrip			1%	DC-1MHz
					2%	1-10MHz

Notes
[1]  In 400GbE mode, the typical power consumption is 21W and the maximum power consumption is 22.5W .When switching to    4×100GbE mode , the typical power consumption will be 22W and the maximum power consumption will be 23W, the current will also change accordingly.
[2]  Not tested in standard PN.   Will be supported upon customer request.

Optical ，Electrical Characteristic
Tested under recommended operating conditions, unless otherwise noted Table3-Transmitter Operating Characteristic-Optical ，Electrical

Parameters		Unit	Min.	Type	Max.	Note
Modulation format	400G		ZR400-CFEC-16QAM			CFEC FEC, NCG 10.8dB
			ZR400-OFEC-16QAM			OFEC FEC, NCG 11.6dB
	300G		ZR300-OFEC-8QAM
	200G		ZR200-OFEC-QPSK
	100G		ZR100-OFEC-QPSK
Baud Rate	400G	GBd	59.843750000±20ppm			400ZR,SFF-8024        Media        ID 3Eh/3Fh
			60.138546798±20ppm			400ZR+,SFF-8024 Media ID 46h
	300G		60.138546798±20ppm			300ZR+,SFF-8024 Media ID 47h
	200G		60.138546798±20ppm			200ZR+,SFF-8024 Media ID 48h
	100G		30.069273399±20ppm			100ZR+, SFF-8024 Media ID 49h
Transmitter frequency range		THz	191.3		196.1	For OIF 400ZR app code 0x02 the frequency is fixed at 193.7THz and not configurable.
Flexible DWDM Grid		GHz	3.125
Frequency Fine Tuning range		GHz	-5		5	bright tuning
Frequency Fine Tuning step		GHz	0.1
Laser frequency accuracy		GHz	-1.8		1.8
TX spectral Upper Mask		(GHz,dB)			(30.0,0.0)(37.0,-10.0)(39.2,-15.0)(40.4,-20.0)	Refer to OIF-400ZR-02.0 13.3.201a Refer to openzrplus_2p0 11.4.10
TX spectral Lower Mask		(GHz,dB)	(30.0,-9.0)(31.3,-20.0)(31.3,-3			Refer to OIF-400ZR-02.0 13.3.201b Refer to openzrplus_2p0 11.4.10
			5.0)
Transmitter laser disable time		ms			100
Transmitter wavelength switching time		s			60
Transmitter laser enable time		s			10
Tx output power	400G	dBm	-10		-6	At Programmed Output Power Max,Transmit output power overwavelength, temperature, and aging.
	300G	dBm	-10		-6
	200G	dBm	-9		-5
	100G	dBm	-8		-4
Transmit Output Power at 400G ZR Gray		dBm	-9		-6	For OIF 400ZR app code 0x02
Transmit Output Power Adjustable Range	400G 300G	dBm	-13		-9	The absolute accuracy is ±1dBFor OIF 400ZR app code 0x02 the output power is not configurable.
Transmit Output Power Adjust step		dB	0.1
Optical power setting accuracy		dB	-1		1	Diff between setting and reporting
Output power monitor accuracy		dB	-1		1
Power stability		dB	-0.5		0.5	At fixed wavelength, room temp
			-1		1	At fixed wavelength
Total output power with Tx disabled		dBm			-20
Total output power during wavelength switching		dBm			-20
Transmitter reflectance		dB			-20	Looking into the Tx
Inband (IB) OSNR		dB	40
Out-of-band (OOB) OSNR		dB	35
Lorentzian linewidth		kHz			300	Tx and LO
Relative intensity noise		dB/Hz			-140
Mean I-Q amplitude imbalance		dB			1
Transmitter polarization dependent power		dB			1.5
DC I-Q offset (mean perpolarization)		dB			-26
I-Q instantaneous offset		dB			-20

Table4- Receiver Operating Characteristic-Optical

Parameters		Unit	Min.	Type	Max.	Note
Modulation format	400G		ZR400-CFEC-16QAM			CFEC FEC,Net Coding Gain(NCG) 10.8dB,Theoretical Max Pre-FEC BER 1.25E-2
			ZR400-OFEC-16QAM			OFEC FEC,Net CodingGain(NCG)  11.6dB ，Theoretical
	300G		ZR300-OFEC-8QAM
	200G		ZR200-OFEC-QPSK			Max Pre-FEC BER 2.0E-2
	100G		ZR100-OFEC-QPSK
Baud Rate	400G	GBd	59.843750000±20ppm			400ZR,SFF-8024 Media ID 3Eh/3Fh
			60.138546798±20ppm			400ZR+,SFF-8024 Media ID 46h
	300G		60.138546798±20ppm			300ZR+,SFF-8024 Media ID 47h
	200G		60.138546798±20ppm			200ZR+,SFF-8024 Media ID 48h
	100G		30.069273399±20ppm			100ZR+,SFF-8024 Media ID 49h
Frequency offset  between  received carrier and LO		GHz	-3.6		+3.6
Input power range	400G	dBm	-12		0	Signal power,OSNR>26dB,400ZR
			-12		0	Signal power,OSNR>24dB, 400ZR+
	300G		-15		0	Signal power,OSNR>21dB, 300ZR+
	200G		-18		0	Signal power, OSNR>16dB, 200ZR+
	100G		-18		0	Signal power, OSNR>12.5dB,100ZR+
OSNR Tolerance	400G	dB/0.1n m			26	400ZR		Measured back-to-back  with short optical channel
					24	400ZR+
	300G				21	300ZR+
	200G				16	200ZR+
	100G				12.5	100ZR+
RX sensitivity	400G	dBm	-20			400ZR		Inband (IB) OSNR ≥ 34dB, OIF 400ZR app code 0x02
			-22			400ZR+		Point to point
non-damaging input power		dBm			10	Total power
Optical input power monitor accuracy		dB	-2		2	Total power
MAX Pre-FEC BER			0.017		0.020
Chromatic dispersion tolerance	400G	ps/nm			2,400	400ZR	Tolerance to CD with ≤ 0.5 dB penalty to OSNR sensitivity when change in SOP  is ≤  1rad/ms
					20,000	400ZR+
	300G				40,000	300ZR+
	200G				50,000	200ZR+
	100G				100,000	100ZR+
CD monitor accuracy		ps/nm	-200		+200
DGD tolerance	400G	ps	33			400ZR	OSNR penalty<0.5dB
			66			400ZR+
	300G		83			300ZR+
	200G		83			200ZR+
	100G		100			100ZR+
DGD monitor accuracy		ps	-15		15	0~40ps for 400ZR 0~100ps for 400/300/200/100ZR+
Peak PDL tolerance		dB			3.0	Tolerance to peak PDL with ≤1.3dB additional OSNR penalty when change in SOP is ≤1 rad/ms
					3.5	Tolerance to peak PDL with ≤1.8dB additional OSNR penalty when change in SOP is ≤1 rad/ms
Tolerance to change in SOP		krad/s	50			With ≤0.5dB additional OSNR penalty over all PMD and PDL values
Optical return loss		dB	20			Optical reflectance at Rx connector input.
Optical Rx_LOS Assert Threshold	400G	dBm	-28	-26	-24	OIF 400ZR app code 0x01 ，0x02, 0x03,
	400G		-30	-28	-26	400ZR+
	300G		-32	-30	-28
	200G		-32	-30	-28
	100G		-32	-30	-28
Optical Rx_LOS Hysteresis		dB	1	1.5	2.5
Optical input power transient tolerance		dB	-2		2	Tolerance to change in input power with<0.5dB penalty to OSNR tolerance.The 20% to 80% rise/fall times for the input power change shall be no faster than 50 µs.
Service recovery time		ms			40

The transmitter and receiver comply with the 400GAUI-8 C2M and CEI-56G-VSR-PAM4 electrical specification, electrical interface definitions refer to IEEE Std 802.3-2018 Annex 120E. The data lines are AC-coupled and terminated in the module per the following figure from the QSFP-DD MSA.

Table5-Operating Characteristic-Electrical highspeed

Parameter	Symbol	Min	Max	Unit	note
400GAUI-8 C2M and 100GAUI-2 C2M Electrical Characteristics
Transmitter(module output)
Signaling Rate, each lane		26.5625 ± 100 ppm		GBd	PAM-4
AC common-mode output voltage (RMS)	RMS		17.5	mV
Differential Voltage pk-pk	Vin, pp	750	900	mV
Near-end ESMW (Eye symmetry mask width)		0.265		UI
Near-end Eye height, differential		70		mV
Far-end ESMW		0.2		UI
Far-end Eye height，differential		30		mV
Far-end pre-cursor ISI ratio		-4.5	2.5	%
Differential output return loss		Equation (83E-2)			IEEE Std 802.3-2018 Annex 120E
Common  to   differential   mode   conversion return loss		Equation (83E-3)			IEEE Std 802.3-2018 Annex 120E
Differential termination mismatch		–	10	%	At 1 MHz
Transition time(20% to 80%)	Trise/Tfall	9.5		Ps	20% to 80%
DC common mode voltage	Vcm	-350	2850	mV
Receiver (module input)
Signaling rate per lane		26.5625 ± 100 ppm		GBd	PAM-4
Differential pk-pk input voltage tolerance	Vout, pp	900		mV
Differential input return loss (min)		Equation (83E–5)			IEEE Std 802.3-2018 Annex 120E
Differential  to  common-mode  input  return loss (min)		Equation (83E–6)			IEEE Std 802.3-2018 Annex 120E
Differential termination mismatch			10	%
Module stressed input test		See 120E.3.4.1			IEEE Std 802.3-2018 Annex 120E
Single-ended voltage tolerance range (min)		-0.4	3.3	V
DC common mode voltage(min)		-350	2850	mV
CAUI-4 C2M Electrical Characteristics
Transmitter(module output)
Signaling Rate, each lane		25.78125 ± 100 ppm		GBd	NRZ
AC common-mode output voltage (RMS)	RMS		17.5	mV
Differential Voltage pk-pk	Vin, pp	750	900	mV
Eye width	UI	0.57
Eye height, differentia	mV	228
Vertical eye closure	dB	5.5
Differential output return loss		Equation (83E-2)			IEEE Std 802.3-2018 Annex 83E
Common  to   differential   mode   conversion return loss		Equation (83E-3)			IEEE Std 802.3-2018 Annex 83E
Differential termination mismatch		–	10	%	At 1 MHz
Transition time(20% to 80%)	Trise/Tfall	12		Ps	20% to 80%
DC common mode voltage	Vcm	-350	2850	mV
Receiver (module input)
Signaling rate per lane		25.78125 ± 100 ppm		GBd	NRZ
Differential pk-pk input voltage tolerance	Vout, pp	900		mV
Differential input return loss (min)		Equation (83E–5)			IEEE Std 802.3-2018 Annex 83E
Differential  to  common-mode  input  return loss (min)		Equation (83E–6)			IEEE Std 802.3-2018 Annex 83E
Differential termination mismatch			10	%	IEEE Std 802.3-2018 Annex 83E
Module stressed input test		See 83E.3.4.1
Single-ended voltage tolerance range (min)		-0.4	3.3	V
DC common mode voltage(min)		-350	2850	mV

Table6-Operating Characteristic-Electrical Lowspeed

Parameters	Symbol	Unit	Min.	Max.	Note
SCL and SDA	VOL	0	0.4	V	IOL(max)=3mA for fast mode,  20ma for Fast-mode plus
	VOH	Vcc-0.5	Vcc+0.3	V
SCL and SDA	VIL	-0.3	Vcc*0.3	V
	VIH	VCC*0.7	Vcc+0.5	V
Capacitance  for  SCL and SDA I/O signal	Ci		14	pF
Total   bus   capacitivel oad for SCL and SDA	Cb		100	pF	For 400kHz clock rate, use 3.0 k Ohms pull up resistor max. For 1000kHz clock rate, refer to Figure 45 (QSFP-DD-Hardware-rev5p0)
			200	pF	For 400kHz clock rate, use 1.6 k Ohms pull up resistor max. For 1000kHz clock rate, refer to Figure 45 (QSFP-DD-Hardware-rev5p0)
InitMode, ResetL and ModSelLIntL	VIL	-0.3	0.8	V
	VIH	2	VCC+0.3	V
	|Iin|		360	uA	0V<Vin<Vcc
	VOL	0	0.4	V	IOL=2.0mA
	VOH	VCC-0.5	VCC+0.3	V	10k ohms pull up to Host Vcc
ModPrsL	VOL	0	0.4	V	IOL=2.0mA
	VOH				ModPrsL can be implemented as a short-circuit to GND on the module

Dimensions

Ordering Information

Part No.	Specification							Application
	Pack	Rate	Tx/RX	Pout	Top	Reach	Others
FTQD-4H-ZR	QSFP-DD	400G1	ICTR	-10~-6dBm	0～75℃	450km1	DDM/ RoHS	400G ZR+

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Important Notice

Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by F-tone Networks before they become applicable to any particular order or contract. In accordance with the F-tone Networks policy of continuous improvement specifications may change without notice.

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