▎ 摘　　要

NOVELTY - The sensor has a half-wave plate (3-1) aligned with center of an optical fiber coupler (2-1). A first lens (5-1) is aligned with a first polarizing beam splitting prism (4-1). A second lens (5-2) is aligned with center of a precise pinhole (6-1). A third lens (5-3) is aligned with a second polarizing beam splitting prism (4-2). A side of a third polarizing beam splitting prism (4-3) is provided with an illumination light source (8). A quarter wave plate (10) is aligned with a fourth polarizing beam splitting prism (4-4). An objective lens (11) aligned with a center of a quarter wave plate (10). A filter sheet (16) is aligned with the center of a lens (5-5). A photoelectric detector (17) is aligned with the filter sheet. A phase-locked amplifier (18) is electrically connected with the photoelectric detector. USE - Graphene mechanical vibrator based high temperature sensor for sensing change of physical quantity in an external environment. Uses include but are not limited to a transportation industry, communication field, biological medical treatment field and an aviation ship. ADVANTAGE - The sensor is simple to manufacture, light in weight, and has small volume, high resonance frequency, high quality factor, high sensitivity, high stability and wide application prospect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for operating a graphene mechanical vibrator based high temperature sensor for sensing change of physical quantity in an external environment. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a Graphene mechanical vibrator based high temperature sensor for sensing change of physical quantity in an external environment. First single-mode optical fiber (1-1) Second single-mode optical fiber (1-2) First optical fiber coupler (2-1) Second optical fibre coupler (2-2) First half-wave plate (3-1) Second half-wave plate (3-2) Third half-wave plate (3-3) Fourth half-wave plate (3-4) First polarizing beam splitter prism (4-1) Second polarizing beam splitting prism (4-2) Third polarizing beam splitting prism (4-3) Fourth polarizing beam splitting prism (4-4) First lens (5-1) Second lens (5-2) Third lens (5-3) Fourth lens (5-4) First precise pinhole (6-1) Second precise pinhole (6-2) First high reflection mirror (7-1) Second high reflection mirror (7-2) Illumination light source (8) Dichroic mirror (9) Quarter wave plate (10) Graphene mechanical vibrator (12) Beam splitter (14) Ccd camera (15) Filter sheet (16) Photoelectric detector (17) Phase-locked amplifier (18) Electro-optical modulator (19)