The SFP 1.25Gb/s transceiver 1310nm 20km works on a dual fiber, which is basically fiber optics that is composed of two strands that are different from each other, but they have the same wavelength. They can be joined or be made into a single fiber or one strand in order to increase the throughput and make the performance even more efficient. It also becomes bidirectional (BIDI) so it’s able work on either direction. A single fiber works on two wavelengths: 1550nm and 1310 nm. Regardless, fiber optics is always considered to be a better investment than other types of cables since it’s more reliable and flexible. The SFP 1.25Gb/s Transceiver 1310nm 20km has been designed to fit a number of SFP cages perfectly. In other words this transceiver can be easily added into any existing network, allowing it to take full advantage of the speed, agility, and performance of fiber optics.
It also comes with a Duplex LC connector, which is designed by Lucent Technologies (hence the name). It then looks like an RJ45 connector, but it’s basically a duplex connector that QSFP-H40G-CU3M – Compatible Cisco 40GbE QSFP+ QDR Direct-Attach Copper Cable 3ml is both connected via clip. You can use this to attach the transceiver into the cage.
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