Mode scrambler

A mode scrambler, comprising:

• a fastening connection component;
• a first translation plate;
• and
• a second translation plate;
• wherein the fastening connection component is provided with an L-shaped groove for placing an optical fiber;
• a vertical surface of the L-shaped groove is a sinusoidal surface, and the sinusoidal surface is provided along a length direction of the optical fiber;
• the first translation plate and the second translation plate are both connected to the fastening connection component;
• the first translation plate is configured to reciprocate relatively to the fastening connection component along a radial direction of the optical fiber, and the second translation plate is configured to reciprocate relatively to the fastening connection component in a vertical direction;
• a surface of the first translation plate contacting the optical fiber is a sinusoidal surface, and the sinusoidal surface of the first translation plate and the sinusoidal surface of the L-shaped groove are provided on two opposite sides of the optical fiber;
• the second translation plate is abutted against a top of the optical fiber and is in close contact with a part of the sinusoidal surface of the first translation plate;
• and
• the optical fiber is enclosed among the fastening connection component, the first translation plate and the second translation plate.