Compact all-fiber thermo-optic modulator based on a Michelson interferometer coated with NaNdF4 nanoparticles

• DOI: 10.1364/oe.419621
• Publication Date: 2021-02-10T08:23:29Z
• Authors: Yutao Bo; Chunying Guan; Rang Chu; Tailei Cheng; Li Xu; Lu Liu; Jing Yang; Jinhui Shi; Pengfei Wang; Jun Yang; Libo Yuan
• Keywords: 0103 physical sciences; 01 natural sciences; 7. Clean energy

We propose and investigate an all-fiber thermo-optic modulator based on a side-polished twin-core fiber (TCF) Michelson interferometer (MI) coated with NaNdF 4 nanoparticles. The MI was fabricated by tapering the splicing point between TCF single mode (SMF). A short suspended core (SCF) is spliced to one of introduce fixed optical phase difference (OPD). photo-thermal material . Owing ohmic heating nanoparticles under 808 nm pump laser, effective refractive index polished changed, resulting in shift MI. has significant modulation 2.9 π near wavelength 1260 can obtain switching rise (fall) time 152 (50) ms. proposed device will have great application potential modulators due compact structure strong robustness.