Broadband low-phase-noise integrated photo-production microwave source chip and system based on lithium niobate film

• Main Authors: ZHANG YUNXIAO, SUN WENBAO
• Format: Patent
• Language: Chinese; English
• Published: 15.02.2022
• 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 LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The invention provides a broadband low-phase-noise integrated photo-production microwave source chip based on a lithium niobate film. The broadband low-phase-noise integrated photo-production microwave source chip comprises a lithium niobate optical waveguide arranged on the lithium niobate film. The lithium niobate optical waveguide comprises a spot-size conversion waveguide, a first straight waveguide, a first bent waveguide, a first Y-branch waveguide and a second Y-branch waveguide; a fourth straight waveguide and a fifth straight waveguide are connected in parallel between the first Y-branch waveguide and the second Y-branch waveguide; the fourth straight waveguide is connected with a first optical microcavity waveguide; the fifth straight waveguide is connected with a second optical microcavity waveguide; the spot-size conversion waveguide, the first straight waveguide and the first metal electrode jointly form a phase modulator; the fourth straight waveguide, the first optical microcavity waveguide and