Rotation drive mechanism, driving method, coupling method, and coupling device

A driving method adapted for moving a fiber array unit, comprising steps of:

• retaining, with a retention mechanism, the fiber array unit;
• driving the retention mechanism by a rotation drive mechanism that includes a plurality of rotatable assemblies;
• and
• driving a movable seat of each of the plurality of rotatable assemblies to move arcuately along a base seat of the respective one of the plurality of rotatable assemblies along an arcuate path about an axis.

A coupling method adapted to couple a fiber array unit to an integrated circuit component, comprising steps of:

• retaining, with a retention mechanism, the fiber array unit;
• driving the retention mechanism by a rotation drive mechanism that includes a plurality of rotatable assemblies such that the fiber array unit is moved toward the integrated circuit component;
• measuring an intensity of an optical signal transmitted between the fiber array unit and the integrated circuit component;
• and
• driving a movable seat of each of the plurality of rotatable assemblies to move arcuately along a base seat of the respective one of the plurality of rotatable assemblies along an arcuate path about an axis, such that the retention mechanism is driven to adjust a posture of the fiber array unit according to the intensity of the optical signal until the intensity falls within a predetermined range.