200G 1300 KM & 100G 3000 KM CFP2 (C120) Coherent Optical Transceiver

• Customization: Available
• Application: Communication
• Type: Single Mode or Multimode
• Model NO.: LACF2-DCO-200GT
• Connection Structure: LC
• Material Shape: Flat Wire
• Allowed Lateral Pressure: 100(N/100mm)
• Allowed Tensile Strength: <100N
• Core: Multicore
• Certification: RoHS, CE, ISO9001, FCC
• Brand: Link-All or OEM
• Sheath Material: Blister Box
• Condition: New
• Transport Package: Blister Pack
• Trademark: Linksall
• Origin: China
• HS Code: 8517706000
• Production Capacity: 100, 000 Per Year

Product Description

200G 1300 km & 100G 3000 km CFP2 (C120) Coherent Optical Transceiver
(LACF2-DCO-200GT)

     · Transmission reach beyond 1300 km/3000 km over SMF for 200G/100G

· Hot-pluggable
· C120 band supported (C6THz)
· Support PM-16QAM (200G) and PM-DQPSK/PM-QPSK (100G) modulation
· Supports SD-FEC
· Supports 100G/200G Flex-rate
· Supports OTU4/OTUC2/2 x 100GE/100GE signaling
· Compliant with CEI-28G-MR specifications
· Compliant with OTL4.4/OTLC2/CAUI-4 signaling
· Compliant with CFP2 MSA Hardware Specification Rev. 1.0
· Compliant with OIF-CFP2-DCO-01.0
· Compliant with CFP MSA Management Interface Specification Version 2.6 (R06a)
· Power consumption: 26 W (200G)/21 W (100G)

Application
The module is designed to be used on the host board of system integrators to support transmission over DWDM links in Metro networks. As shown in Figure 3-1, it comprises high-data lanes, a single reference clock from hosts, a single 3.3 V power supply, an MDIO interface for module control and status report, and dedicated alarm and control pins.
Description
The LACF2-DCO-200GT module uses a 104-pin CFP2 MSA connector for all electrical interfaces with the host card, whereas the optical interfaces on the line side are provided through the optical receptacles on the CFP2. The module can be portioned into three functional parts: Tx path, Rx path and control & power block.
All control interface pins are routed to the MCU and oDSP. The MCU is also used for fast controls inside the module such as modulator bias adjustment, software image management, overall control coordination and status reporting.
Host Interface Configuration
The module supports host signal types: OTUC2/OTU4/100GE/2 x 100GE. The host electrical interfaces are compliant with CEI-28G-MR. The host rate is dependent on the framing type and the supported host rates are shown in the following table.

Host Frame	Host Data Rate (Gbps)	Signaling	Data Rate (Gbps)	REFCLK Clock
200G OTUC2	2 x 112.305	OTLC2 NRZ	28.076	NA
100G OTU4	111.81	OTL4.4 NRZ	27.952	NA
100GE	103.125	CAUI-4 NRZ	25.78125	NA

Line Framing Format
The line framing format is Link-all proprietary and it is required that both ends of the optical connection use Link-all technologies, in which there is proprietary SD-FEC in conjunction with 200G PM-16QAM/100G PM-DQPSK/100G PM-QPSK modulation.
The actual line rate depends on the configured FEC mode and the host data format.

Line Data Rate	Min Grid Spacing (GHz)	Baud Rate (Gbaud)	Modulation Format	FEC OH	Rx OSNR (dB) EOL @Pre-FEC BER
200G	50	39.7	PM-16QAM	25%	17
100G	50	33.6	PM-QPSK /PM-DQPSK	25%	11.5/13

Configuration Overview
The table below summarizes the possible combinations of host type and line side (modulation) that can be configured through the MDIO interface. Refer to the LACF2-DCO-200GT software interface specification for register details needed to configure the CFP2 for the desired application.

Host Format	Host Signaling	Line Side Configuration	FEC	Line Format
OTUC2	OTLC2	PM-16QAM	SD-FEC	Link-all proprietary
OTU4	OTL4.4	PM-DQPSK	SD-FEC	Link-all proprietary
OTU4	OTL4.4	PM-QPSK	SD-FEC	Link-all proprietary
2 x OTU4	OTL4.4	PM-16QAM	SD-FEC	Link-all proprietary
2 x 100GE	2 x CAUI-4	PM-16QAM	SD-FEC	Link-all proprietary
100GE	CAUI-4	PM-QPSK	SD-FEC	Link-all proprietary
100GE	CAUI-4	PM-DQPSK	SD-FEC	Link-all proprietary

Environmental Specifications
The table below defines the environmental specifications of the LACF2-DCO-200GT module.

Parameter	Min	Max	Unit	Condition
Environmental storage Temperature	-40	85	°C	-
Environmental storage (relative) humidity	-	85	%	-
Environmental operating (relative) humidity	-	85	%	-
Operating temperature	0	75	°C	This temperature is monitored through an internal thermal sensor (MDIO register B02F). The temperature reading represents the module case temperature at the specified location.
Short term operating at high temperature	-	80	°C	The module operates up to a maximum temperature for short term (96 hours continuously, less than 15 days per year). This temperature is monitored through an internal thermal sensor (MDIO register B02F). The temperature reading represents the module case temperature at the specified location.

Absolute Maximum Ratings
Operating or handling the module out of any specified absolute maximum rating is subject to permanent damage of the module.

Parameter	Min	Max	Unit	Condition
Operating case temperature	-10	85	°C	This temperature is monitored through an internal thermal sensor (MDIO register). The temperature reading represents the module case temperature at the specified location.
Power supply	-0.3	3.7	V	-
Rx input power	-	14	dBm	Same modulation format; same wavelength as Rx local oscillator; continuous or peak power

Electrical Characteristics
A single +3.3 V power supply shall be provided by the host card through the 104-pin connector and internal DC/DC power converters are used to regulate the power for different components inside the module. The +3.3 V power supply provided by the host shall adhere to the CFP2 MSA Hardware Specification version1.0 available at . The electrical ground is isolated from the module chassis ground.
The power supply requirements are specified in Table 9-1 below. Those power classes for which the maximum current per pin exceeds 1125 mA will require agreement from the electrical connector supplier.

Parameter	Symbol	Min	Typ	Max	Unit	Note
3.3 V DC supply voltage	P3V3	3.2	3.3	3.4	V	Measured at the electrical connector
3.3 V DC supply current	P3V3_Icc	-	-	9	A	The maximum current/pin shall not exceed 1.125 A
Power supply noise	P3V3_noise	-	-	2	%p-p	DC-500 MHz
Power supply ripple	P3V3_ripple	-	-	1	%p-p	DC-20 MHz
lnrush current	P3V3_Iir	-	-	500	mA/μs	-
Turn-off current	P3V3_Ito	-500	-	-	mA/μs	-
Power consumption	Pwlp	-	-	2	W	Low power mode
Power consumption	Pwc4	-	-	26^*1, *2	W	200G PM-16QAM
		-	-	21^*1, *2	W	100G PM-DQPSK/QPSK

Note
^*1 Power consumption depends on the actual application condition. For 200G PM-16QAM typical application, optical links should have enough OSNR margin with pre-BER better than 1.5e-2 and power consumption is less than 26 W (200G with framer enabled)/21 W (100G with framer enabled).
^*2 With framer disabled, the power consumption will be reduced to 25 W for 200G or 20 W for 100G.
The LACF2-DCO-200GT module supports alarm, control, and monitoring functions over an MDIO bus. This interface consists of eight pins listed in the table below.

Signal	I/O	Logic	Description
MDC	I	1.2 V LVCMOS	Management data clock, max. 4 MHz
MDIO	I/O	1.2 V LVCMOS	Management data input output, max. 4 Mbps
PRTADR[2:0]	I	1.2 V LVCMOS	Physical port address
GLB_ALRMN	O	3.3 V LVCMOS	Global alarm, active low, indicating FAWS condition

There are six control pins as listed in the following table to support real-time control via hardware pins.

Signal	I/O	Logic	Description
MOD_RSTN	I	3.3 V LVCMOS	Module reset, active L, internal PD
TX_DIS	I	3.3 V LVCMOS	Transmitter disable, active H, internal PU
MOD_LOPWR	I	3.3 V LVCMOS	Module low power, active H, internal PU
PRG_CNTL[2:1]	I	3.3 V LVCMOS	Programmable control [2:1], internal PU

The PRG_CNTRL [2:1] signals have MSA defined default meanings that are listed in the CFP MSA implementation agreement. The lower two bits (hardware interlock) define the power class of the module and must be kept static during initialization. When MOD_LOPWR is active, the maximum power consumption is < 2 W and the host can still communicate with the module via the MDIO interface.
The MOD_RSTN signal is run to a reset chip to generate a reset to the internal MCU and oDSP ASIC (RST_N).There are five alarm pins from the module back to the host.

Signal	I/O	Logic	Description
RX_LOS	O	3.3 V LVCMOS	Receiver loss of signal, active H
MOD_ABS	O	3.3 V LVCMOS	Module absent, active H, internal PD
PRG_ALRM[2:1]	O	3.3 V LVCMOS	Programmable alarm [2:1]

All signals but MOD_ABS interface to the DSP ASIC. The PRG_ALRM [2:1] signals have MSA defined default meanings that are listed in the CFP2 implementation agreement.
The transmitter and receiver comply with the CEI-28G-MR electrical specification. The data lines are AC-coupled and terminated in the module according to the following figure from the CFP2 MSA. The termination also applies to the reference clock, TX monitor clock, and RX monitor clock.

Parameter	Symbol	Min	Typ	Max	Unit	Notes
Signaling rate per lane	TBaud	25.78	-	28.3	Gbps	CEI-28G-MR
Differential voltage pk-pk	TVdiff	800	-	1200	mVpp	-
Differential output Impedance	TRD	80	100	120		-
Common mode noise (RMS)	Vrms	/	/	/	mV	AC-coupled
Transition time	Trise/Tfall	-	TBD	-	ps	20% to 80%
Common return loss	TSCC22	-	-	-6	dB	< 10 GHz
		-	-	-4	dB	10 GHz ~ Baud Rate
Total jitter	-	-	-	0.28	UIpp	-

Parameter	Symbol	Min	Typ	Max	Unit	Notes
Signaling rate per lane	RBaud	25.78	-	28.3	Gbps	CEI-28G-MR
Differential voltage pk-pk	RVdiff	-	TBD	-	mVppd	Compliant with CEI-28G-MR
Common mode noise (RMS)	Vrms	-	TBD	-	mV	AC coupled
Transition time	Trise/Tfall	-	TBD	-	ps	20% to 80%
Differential input impedance	RRD	80	100	120		-
Common return loss	RSCC11	-	-	-6	dB	< 10 GHz
		-	-	-4	dB	10 GHz ~ Baud Rate
Sinusoidal jitter, maximum	R_SJ-max	-	-	5	UIpp	-
Sinusoidal jitter, high frequency	R_SJ-hi	-	-	0.05	UIpp	-
Offset of frequency	-	-	-	20/100	ppm	OTN/ETH

Optical Characteristics
All specifications given in this document are End-of-Life numbers and are valid over the operating temperature. The two tables below contain specifications of the general transmitter and the general receiver. Specifications are common across the Link-all Metro product family.

Parameter	Min	Typ	Max	Unit	Condition
Transmitter frequency range	190.70	-	196.65	THz	-
Transmitter laser frequency stability	-1.5	-	1.5	GHz	-
Transmitter output power range	-10	-	1	dBm	Tunable, default 0.5 dBm
Output power stability (standard range)	-0.3	-	0.3	dB	-
Output power accuracy and stability (standard range)	-1	-	1	dB	-
Transmitter laser disable time	-	-	10	ms	-
Transmitter wavelength switching time	-	-	60	s	-
Transmitter turn-up time from cold start	-	60	120	s	-
Transmitter OSNR	35	-	-	dB/0.1 nm	OSNR at transmitter output (in-band)
Transmitter signal-to-max ASE	TBD	-	-	dB/0.1 nm	Signal to the maximum out-of-band ASE level
Transmitter optical return loss	24	-	-	dB	-
Transmitter output power with TX disabled	-	-	-35	dBm	E.g., max. output power when changing laser frequency.
Transmitter polarization dependent power	-	-	1	dB	Power deference between X and Y polarization