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How to Choose a Suitable 100G QSFP28 Optical Transceiver?

Ⅰ. Methods of selecting a 100G QSFP28 optical transceiver

1. 5-100m multimode fiber optic cable between switches

When utilized with OM3 multimode fiber, use the 100G QSFP28 SR4optical transceiver, which has an MTP interface (8 cores) and a transmission distance of 70m.

When using OM4 multimode fiber, the transmission distance is 100m. In 100G networks, the 100G QSFP28 SR4optical transceiver is suitable for short distance transmission (less than 100m).

2. Single-mode fiber optic cabling between switches: >100M-2KM

Choose between the 100G QSFP28 PSM4 optical transceiver and the 100G QSFP28 CWDM4 optical transceiver for short and medium-distance 100G networks.

The 100G QSFP28 PSM4 optical transceiver employs 8 parallel single-mode fibres to transmit data over a distance of roughly 500 meters; the 100G QSFP28 CWDM4 optical transceiver can transmit data over a distance of up to 2 kilometers using single-mode fibers.

3. Long mode single-mode fiber: ≤10 km

The 100G QSFP28 LR4 optical transceiver, which has a duplex LC interface and can transmit data over a distance of 10 km when used with single-mode fiber, is appropriate for long distance (greater than 2 km but less than 10 km) in 100G networks.

Ⅱ. There are four different models of 40G optical transceivers

1. 40GBASE-SR4 optical transceiver

It is the most often utilized transceiver in 40G networks for short-distance transmission. The transmission distance of OM3 fiber optic patch cable is 100 meters when used with MPO/MTP interface multimode fiber optic patch cable.

To accomplish high bandwidth 40G transmission, the 40GBASE-SR4 optical transceiver features four full-duplex channels that are also used for transmission across four channels, each allowing 10Gbps data transmission.

2.  QSFP-40G-LR4 optical transceiver

The 40GBASE-LR4 optical transceiver is the most common long-distance transmission optical transceiver. The 40GBASE-LR4 optical transceiver can achieve a maximum transmission distance of 10 kilometers when combined with duplex LC interface single-mode fibre optic patch cords.

There are four separate transmit and receive channels on the optical transceiver. The optical signal is multiplexed at the transmit end to combine all wavelengths for transmission, and then demultiplexed at the receiving end into four channels with a 10 Gbps transmission rate.

3. 3QSFP-40G-PSM4 Optical modulo

The 40GLR4PSM optical transceiver is a four-channel, highly integrated transceiver with a high port density and cheap cost. The optical transceiver 40GLR4PSM functions in the same way as the 40GSR4QSFP+ optical transceiver.

The distinction is that the 40GLR4PSM optical transceiver uses single-mode patch cables to transport data over long distances of 40G, i.e., the parallel optical signals are sent in parallel over eight single-mode fibres. The maximum transmission range is 2 kilometers.

4. QSFP-40G-ER4 optical transceiver

The 40GBASE-ER4 is the latest transceiver to be introduced, and it employs an LC duplex interface with a single-mode patch cable, similar to the earlier LR4. The greatest transmission range is 40 kilometers.

The 40G QSFP+ optical transceiver allows for high-density, low-cost, low-power 40G data transfer and has a bright future ahead of it.

It's critical to grasp the interface types, key models, and application scenarios of 40G QSFP+ before choosing the best optical transceiver for your data equipment. We hope that this post has provided you with further information on 40G QSFP+ optical transceivers.

Compatible Optical Transceiver

Equipment manufacturers of optical transceivers will encrypt their devices to varying degrees, also known as compatibility. transceivers of a particular brand can only be used with devices of the same brand, and cannot be matched with other brand optical transceivers. Compatibility manufacturers need to conduct different compatibility adaptations on the optical transceivers. Whether or not they can perfectly solve compatibility issues is particularly important.

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