Which module should this transceiver be used with at the other end of the line?

A transceiver with a 1270 nm wavelength works in a pair with a WDM module at 1330 nm — together they form a full-duplex channel over a single fiber.

What type of fiber is needed for this module?

The module operates over single-mode (SM) fiber, standard for lines up to 10 km long.

Can the module be used on an already-operational route with one free fiber?

Yes, the WDM solution is most advantageous precisely for such situations — it eliminates the need to lay additional cable.

SFP+ WDM 10G module, LC Simplex, up to 10 km (8dB), 1270nm

The Pixietech SFP+ WDM 10G optical module with an LC Simplex connector and a 1270 nm wavelength enables bidirectional data transmission at a speed of 10 Gbit/s over a single optical fiber over distances up to 10 kilometers. WDM (BiDi) technology is especially valuable where only a single fiber is available: on already-installed routes or under conditions of a limited number of strands in the cable. The module is used in a pair with a transceiver at a 1330 nm wavelength at the opposite end of the line.

SFP+ WDM 10G module, LC Simplex, up to 10 km (8dB), 1270nm

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