Kohdistusmoduulin

The kohdistusmoduuli is a specialized module used primarily in optical communication and radar systems to control the directionality of signal beams. The term, derived from the Finnish word for “focusing,” refers to a device that adjusts the phase front of an emitted wave, thereby steering the beam without mechanical movement.

In optical fibers, the kohdistusmoduuli functions as a dynamic focus element that compensates for dispersion and maintains beam integrity over long distances. It works by applying a variable refractive index across the optical aperture, often achieved through integrated electro‑optic or thermo‑optic effects. This enables adaptive beam shaping, which is essential for high‑capacity wavelength–division multiplexing (WDM) networks and fiber‑laser systems.

Radar and radio‑frequency applications employ the kohdistusmoduuli in phased‑array antenna assemblies. By phase‑shifting individual radiating elements, the module can electronically scan the transmission beam across a range of angles. The result is rapid beam switching and the ability to create multiple simultaneous beams, which is useful for tracking, surveillance, and high‑speed data links.

Manufacturers typically build the kohdistusmoduuli using silicon photonics, lithium niobate, or plasmonic substrates, depending on the required frequency, bandwidth, and power handling. Integration into commercial systems has accelerated the adoption of dynamic beam‑steering technologies in both civilian and defense sectors.