IdealPhotonics' two-in-one polarization-maintaining patch cord is a special type of patch cord that integrates two polarization-maintaining fibers (PM fibers) into a single sheath. Through precise axis alignment (parallel or orthogonal arrangement of the fast and slow axes), it meets the stringent polarization consistency requirements of applications such as interferometers and quantum systems."Dual-fiber integrated polarization synchronization" utilizes precision axis alignment encapsulation technology to ensure strict matching (parallel or orthogonal) of the fast and slow axes of the two polarization-maintaining fibers, achieving synchronous transmission of polarization states in both channels (extinction ratio > 25dB). It provides a stable optical path foundation specifically for systems with extremely stringent polarization consistency requirements, such as fiber optic interferometers and quantum key distribution.'