Ascent Communication Technology

40G QSFP+ PLR4 1310 nm 10 km

Ascent’s QSFP-AQ-MP-31-10 is a four-channel, hot-pluggable, parallel, fiber-optic QSFP+ transceiver for InfiniBand QDR/DDR/SDR, 10G/8G/4G/2G fiber channel and SAS applications. It is compliant with the QSFP+ MSA, IEEE 802.3ae 10GBASE-LR/LW, and OTN data rates OTU2, OTU1e, and OTU2e per the ITU and designed for use in high density 10 Gigabit Ethernet links over single mode fiber.

• Four-channel full-duplex transceiver modules

• Transmission data rate up to 11.2 Gbit/s per channel

• Up to 10 km transmission distance with single-mode fiber

• DFB laser array inside

• <2.5 W power consumption

• Operating case temperature: 0°C to +70°C

• 3.3 V power supply voltage

• RoHS 6 compliant

• Hot-pluggable QSFP form factor

• Single MPO connector receptacle

• Built-in digital diagnostic function

Absolute Maximum Ratings

Parameter	Symbol	Min.	Typ.	Max.	Unit	Notes
Supply Voltage	V_CC	‑0.3		3.6	V
Storage Temperature	T_S	‑40		85	°C
Relative Humidity	RH	0		85	%
Damage Threshold, per Lane	DT	3.4			dBm

Note: Stress in excess of the maximum absolute ratings can cause permanent damage to the transceiver.

General Operating Characteristics

Parameter	Symbol	Min	Typ.	Max	Units	Notes
Bit Rate per Lane	B_R			10.313	Gb/s	1
Bit Error Ratio	B_ER			10‑12		2
Distance on SMF	D₁			10	km	3

Notes:

1. Compliant with 40G Ethernet. Compatible with 1/10 Gigabit Ethernet and 1/2/4/8/10G Fiber Channel.

2. Tested with a PRBS 2³¹‑1 test pattern.

3. Per 40GBASE‑LR4, IEEE 802.3ba.

Optical Characteristics (T_OP(C) = 0 °C to +70 °C, V_CC = 3.13 V to 3.47 V)

Parameter	Symbol	Min.	Typ.	Max.	Unit	Notes
Transmitter
Operating Wavelength	λ_C	1270	1310	1350	nm
Average Output Power	P_AVE	‑5.2		+1	dBm
Difference in Launch Power between any Two Lanes (OMA)	D_L			5	dB
Extinction Ratio	E_R	3.5			dB
Peak Power, each Lane	P_P			4	dBm
Dispersion Penalty, each Lane	T_DP			3.5	dB
Average Launch Power of OFF Transmitter, each Lane	P_OFF			‑30	dB
Eye Mask Coordinates: X1, X2, X3, Y1, Y2, Y3	Specification values 0.23, 0.34, 0.43, 0.27, 0.35, 0.4					1
Receiver
Operating Wavelength	λ_C	1270		1350	nm
Stressed Receiver Sensitivity in OMA	P_SEN1			‑12.5	dBm	2
Average Receive Power, each Lane	P_AVE	‑11		+2.4	dBm
Receiver Reflectance	Rrx			‑12	dB
LOS Assert	Pa	‑30			dBm
LOS De‑Assert	Pd			‑15	dBm
LOS Hysteresis	Pd‑Pa	0.5			dB