WAVE TRANSFORMER

摘要

PURPOSE: A wave transformer is provided to cause the reflection rate of both arms of an interference system to be zero by using a semiconductor optical amplifier as a phase modulating unit. CONSTITUTION: A wave transformer includes a phase modulating unit which has a non-linear device such as a semiconductor optical device. The wave transformer comprises a probe light(1), an optical coupler(6), a signal light(17), an optical coupler(14), optical fibers(9,15), an optical coupler(12), an optical fiber(11), a phase modulating unit(10). The phase modulating unit(10) modulates the signal which is inputted to the input port(a) of the optical coupler(14) when the signal of the signal light(17) is inputted to the input port(b) of the optical coupler(14).