The wave-absorbing apparatus is provided with broadened wave absorption band and improved wave absorption efficiency.

The seismic wavefield is formed from a combination of an upgoing wavefield and a downgoing wavefield.

The output waveguides include central waveguides.

The two or more decomposed wavefields may include a source wavefield and a receiver wavefield.

The wave generator and the wave sensor may be piezoelectric elements, which may alternate between acting as the wave generator and the wave sensor.

In some cases, the incident angles are invariant for each waveguide and vary from waveguide to waveguide.

The liquid core waveguide is mounted in the waveguide receiving bore and defines a waveguide bore.

The serpentine waveguide absorbs incident light that is guided to the serpentine waveguide from the ring waveguide and heats the ring waveguide.

The apparatus can further include a waveguiding second arrangement which has a first waveguide and a second waveguide, whereas the first waveguide receives the first radiation, and the second waveguide receives the second radiation.

The downgoing acoustic wavefield is removed from the total acoustic wavefield.

The waveguide assembly comprises an embedded waveguide (204) embedded in a substrate material (224) and a waveguide connector (200) coupled to the embedded waveguide (204).

The invention relates to a wave guide adapter arranged between a rectangular wave guide with a single cross-section and an elliptic wave guide which allows for the propagation of a fundamental wave type and higher wave types.

The flexible wave guide mount is secured by the wave guide mount circular clamp, and a flexible wave guide connects to the flexible wave guide mount.

A predetermined wavefront error is added to an input wavefront and the wavefront is detected.

A corresponding fluidic lightguide along with devices that function as composite waveguides and lightguides are described.