40G QSFP+ Transceivers Cables for Ethernet RoCE Networking

From SFP to OSFP

	OSFP	QSFP-DD	QSFP Series				SFP Series
Size	OSFP QSFP-DD QSFP112/QSFP56/QSFP28/QSFP+ SFP28/SFP+/SFP
Form Factor	OSFP	OSFP	OSFP112	QSFP56	OSFP28	QSFP+	SFP28	SFP+	SFP
Electrical Lanes	8	8	4	4	4	4	1	1	1
Single Channel Rate	50G/100G/ 200G	25G/50G/100G	100G	50G	25G	10G	25G	10G	1G
Modulation	PAM4	NRZ/PAM4	PAM4	PAM4	NRZ/PAM4	NRZ	NRZ	NRZ	NRZ
Connector Types	MPO/LC	MPO/LC	MPO/LC	MPO/LC	MPO/LC	MPO/LC	LC	LC	LC
Backward Compatibility	/	QSFP+/QSFP28/ QSFP56/QSFP112	OSFP+/QSFP28/QSFP56	QSFP+/QSFP28	QSFP+	/	SFP+	SFP	/

Frequently Asked Questions

QSFP+ Transceivers and Cables

What is the 40G QSFP+ transceiver max supported distance?

The maximum supported distance of a 40G QSFP+ transceiver varies based on the fiber type and specific model. For short-range connections over multimode fiber (MMF), distances typically range from 100 to 150 meters. However, long-range connections over single-mode fiber (SMF) can extend up to 40 kilometers at NADDOD.

Can the 40G-LR4 transceiver also be split into 4x10G connections?

The 40G LR4 achieves its transmission capability through 4-channel 10G LAN-WDM wavelength multiplexing, where each optical lane operates at distinct wavelengths to carry 10G data. This implementation utilizes optical-layer WDM multiplexing and cannot be directly split into independent 10G ports. As an alternative, the 40G-PLR4 module with MPO interfaces can be deployed for port breakout functionality, enabling compatibility with 10G LR modules to support 10km transmission.

What are the differences between 40G QSFP+ MTP and 40G QSFP+ LC transceivers?

QSFP+ MTP: Utilizes the high-density MTP connector, enabling parallel transmission, over multimode fibers. It is suitable for short-to-mid distance(<10KM) high-speed data transmission. QSFP+ LC: Employs the LC duplex connector, typically used in network applications. The LC connector supports wavelength division multiplexing (WDM) transmission, suitable for medium and long distances( up to 40KM) transmission over single-mode fiber.

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40G QSFP+ Transceivers and Cables

OSFP 400/800/1600G

QSFP-DD 400/800G

QSFP112 400G

QSFP56 200G

QSFP28 100G

QSFP+ 40G

SFP28 25G

SFP+ 10G