OPTISCHE VORRICHTUNG MIT EINEM OPTISCHEN KOPPLER ZUM VERZWEIGEN/KOMBINIEREN UND EINEM OPTISCHEN VERSTÄRKER UND DAZUGEHÖRIGE METHODE ZUM VERZWEIGEN/KOMBINIEREN

摘要

A first light waveguide is formed, and second and third light waveguides are respectively connected to the first light waveguide at first and second positions. A first coupler for effecting light branching and/or combining is arranged near the first position, and a second coupler for effecting light branching and/or combining is arranged near the second position. An optical amplifier is arranged on the first light waveguide between the first and second positions for compensating for a light loss of a light wave caused by each of the first and second coupler.