BROADBAND SPECTRUM BASED ON MECHANICALLY INDUCED CASCADED LONG-PERIOD FIBRE GRATINGS

摘要

A simple and efficient variable optical attenuator (VOA) is achieved by using micrabend gratings on single-mode fiber (SMF). The flatness of the attenuator is maintained for 100 nm along the C+L band spectrum. Controlling the pressure will vary the attenuation depth of the device.