PM (Polarization Maintaining) connector is the ideal solution for use with PM fiber cable. It offers polarization maintenance, high precision, low insertion loss, and 360° infinitely variable tuning capabilities. In addition, it enables alignment of the ferrule to the most performance-optimized position. PM connector is used in instruments or scenarios that are more sensitive to polarization. Follow this article to know PM connectors.
What is a PM Connector?
PM connector is a component to terminates the end of a fiber optic cable. It has a 360° ferrule adjustable, and the PM angle can be controlled at ±1°. PM connector is available in SC, LC, FC, PC, FC/PC, SC/APC, FC/APC, and LC/APC with 0.9mm, 2.0mm, and 3.0mm cable types.
PM connector can rotate the ferrule with a 360°angle to align with the cat’s eye. The traditional rotating fiber optic core is replaced by rotating the firmed ferrule. When the cat’s eyes are aligned, the ferrule tail is fixed to fulfill the purpose of precise positioning. After verification, the alignment angle deviation of the PM connector can be controlled within ±1°, and the high extinction ratio can achieve more than 25dB.
PM Connector Structure
PM connector structure has a fiber ferrule (selected ceramic ferrule), the pre-assembled connector body, the connector housing, the fiber cable, and the stress relief boot. Ceramic ferrule, grinding technology, precise docking of the fiber end face, and low insertion loss make transmission more stable and connection more efficient.
Why Use PM Connector?
PM connector is an essential component of two PM fiber coupling that ensures the polarization mode of two PM fibers maintains the original polarization state of polarized light and high extinction ratio for transmission. This requires precise docking of the slow or fast axes of the two fibers to minimize the θ angle error. By aligning the polarization direction of the polarized light with one of the axes, the polarization component assigned to the other axis is small, thereby maintaining the polarization state of the transmitted light. The polarization angle and extinction ratio reflect the degree of polarization.
Features and Benefits
PM connector provides the following features and benefits:
1. 360º infinitely variable tuning
2. Low insertion loss and high return loss
3. High extinction ratio and precision
4. High reliability and stability
5. 2.0 mm narrow keys
Applications
PM connector is used in fiber laser, fiber optic sensing, optical isolator, optical amplifier, patch cord, coherent optical transmission, long-distance bidirectional optical transmission systems, interferometry, planar waveguides, telecommunication networks, LANs, CATV, aerospace, etc.
Conclusion
PM connector provides simple 360°tuning for optimal maximum directional alignment. The pre-assembled connector body brings easy assembly and cost-efficient production. It has a shorter time to operate, which improves the assembly efficiency.
Sun Telecom specializes in providing one-stop total fiber optic solutions for all fiber optic application industries worldwide. Contact us if you have any needs.
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