OPTICAL ATTENUATOR USING PERTURBATION ELEMENT WITH A MULTI-MODE WAVEGUIDE

摘要

ABSTRACTAN OPTICAL ATTENUATOR USING A PERTURBATION ELEMENT WITH A MULTI-MODE WAVEGUIDEABSTRACT OF THE INVENTIONAn optical attenuator having a multi-mode waveguide segment and a perturbation element. An incident single-mode optical signal is converted to a mufti-mode optical signal in the mufti-mode waveguide segment. The optical attenuator couples incident light into higher order modes of the mufti-mode waveguide segment resulting in attenuation of the incident optical signal.FIG . 5A