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Introduction of Five Common 40G QSFP Transceivers

40G optical transceiver refers to the optical transceiver with a transmission rate of 40Gbps, CFP and QSFP are its main packaging forms, and 40GQSFP+ optical transceiver is one of the more widely used ones. The following introduces several common 40G QSFP optical transceivers, hoping to help you when purchasing.

1. 40G LR4 QSFP+ optical transceiver

Since we are a company dealing with China 40g qsfp+, we are pleased that the 40G LR4 QSFP+ optical transceiver is generally used with LC single-mode fiber patch cords, and the transmission distance is up to 10km, and it has 4 data channels, which will transmit data at the same time. The advantages of 40G LR4 QSFP+ optical transceivers are high density, low cost, high speed, large capacity and low power consumption.

The working principle of the 40G LR4 QSFP+ optical transceiver: the laser driver controls the wavelength of arrival, and the optical signal passes through the multiplexer and is combined for transmission.

When reaching the receiving end, these transmitted signals are demultiplexed into four channels with a transmission rate of 10Gbps by the demultiplexer, and then the PIN detector or transimpedance amplifier restores the data stream, and then transmits the optical signal.

2. 40G SR4 QSFP+ optical transceiver

40G SR4 QSFP+ optical transceivers are often used with MPO/MTP connectors in 40G data transmission. They have 4 full-duplex channels and are also transmitted through four channels. The transmission rate is the same as LR4. The difference is that 40G SR4 QSFP+ optical transceivers are often used with multimode fibers. And if you are searching for a 100g qsfp28 supplier, you can contact us.

3. 40G LR4 PSM optical transceiver

As a highly integrated 4 -channel optical transceiver, the 40G LR4 PSM optical transceiver has the advantages of high port density and low cost. The working principle of 40G LR4 PSM optical transceiver is the same as that of 40G SR4 QSFP+ optical transceiver.

The difference is that 40G LR4 PSM optical transceivers are often used to connect with single-mode ribbon fiber connectors, that is, parallel optical signals are sent in parallel through 8 single-mode fibers. If you want information about qsfp compatibility matrix, you can contact us.


4. 40G QSFP+ DAC high-speed cable

Since the 40G QSFP+ DAC high-speed cable consists of two 40G QSFP + optical transceivers and a copper cable. Advantages of DAC :

( 1 ) The cost is low, the impact of dust and other pollutants on the optical cable is reduced, and the transmission efficiency is improved;

( 2 ) The inside of the high-speed cable is made of copper core, which has good heat dissipation effect, energy saving and environmental protection;

( 3 ) High-speed cables have low power consumption.

5. 40G QSFP+ AOC active optical cable

40G QSFP+ AOC active optical cable is the core component to realize parallel optical interconnection, which consists of ribbon optical cable connecting two 40G qsfp + optical transceiver devices.

QSFP+ AOC active optical cable is a high-efficiency integrated optical cable assembly product designed for short-distance multi-channel data communication and interconnection applications. Each signal direction has 4 data channels, and the rate of each channel is 10Gbps.

The advantages of AOC: the transmission power is lower, so the power consumption is small; the weight and volume are much smaller than the high-speed cable; the transmission distance is longer (can reach 100-300 meters).

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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