Separation of Narrow Bandwidth Spectral Light from Femtosecond Pulses Using Optical Coupler with Fiber Grating

摘要

We have developed spectral separation devices for processing femtosecond pulses. These devices are based on an optical coupler structure with fiber gratings. In a computer simulation, we confirmed that these devices could extract<1nm bandwidth light with 80/100 efficiency. We fabricated the spectral separation devices using single mode fibers and highly Ge-doped fibers.