All-optical phase modulator based on gas-filled hollow-core optical fiber

• Main Authors: GUO LINHAO, CHEN FEIFAN, JIN WEI, HE HAILYU, JIANG SHOULIN
• Format: Patent
• Language: Chinese; English
• Published: 27.12.2022
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The utility model discloses an all-optical phase modulator based on a gas-filled hollow-core optical fiber, and the modulator comprises a first light beam combiner which is used for carrying out the wave combination of control light and signal light; the hollow-core microstructure optical fiber assembly is arranged at the light outlet end of the first light beam combiner, the hollow-core microstructure optical fiber assembly is provided with a sealed inner cavity, the sealed inner cavity is filled with absorptive gas, and the temperature and the refractive index of the absorptive gas are changed by controlling light so as to cause phase change of the signal light; and the light separator is arranged at the light emitting end of the hollow-core microstructure optical fiber assembly and is used for separating the signal light. The phase of the signal light is not changed by adopting a heat-sensitive material, so that the problem of scattering effect caused by intrinsic absorption of the material and imperfect c