The Basics of PM Fiber Patch Cords
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PM fiber patch cords maintain the polarization of light during transmission and are used in applications requiring polarization sensitivity. They are available with different connector types, fiber types, cable types, and lengths. Common uses include high-data communications, polarization components, interferometers, fiber amplifiers, lasers, and test equipment. Understanding polarization is important for many modern fiber optic systems.
The Basics of PM Fiber Patch Cords
- 1. WHITE PAPER Fiberstore White Paper | The Basics of PM Fiber Patch Cords 1 Polarization maintaining (PM) fiber optic patch cord is a kind of special fiber optic patch cord. It can be used in many areas. Here’s what you need to know about PM fiber patch cords if your designs require them. What Is PM Fiber Patch Cord? PM fiber patch cord is a fiber optic cable made with PM fiber and terminated on both ends with high-quality ceramic fiber connectors. A PM optical fiber is a single mode optical fiber in which linearly polarized light, if properly launched into the fiber, maintains a linear polarization during propagation, exiting the fiber in a specific linear polarization state. If the polarization of the input light is not aligned with the stress direction in the fiber, the output light will vary between linear and circular polarization (and generally will be elliptically polarized). And the exact polarization will also be sensitive to variations in temperature and stress in the fiber. The light shall be coupled at the fiber entrance parallel to the slow axis or to the fast axis, then the maintaining of the polarization is therefore possible. PM fiber patch cord is a base device of optical passive component. It also features low insertion loss, high extinction ratio, high return loss, excellent changeability over a wide wavelength range and excellent environmental stability and reliability. The following picture shows PM fiber patch cords. Types of PM Fiber Patch Cords There are a wide variety of PM fiber patch cords available that support different data rates and suit various connector types. According to different criteria, PM fiber patch cords can be categorized The Basics of PM Fiber Patch Cords
- 2. WHITE PAPER Fiberstore White Paper | The Basics of PM Fiber Patch Cords 2 into various types. The following is some detailed information about types of PM fiber patch cords based on 4 different criteria: Classification by connector type ― PM fiber patch cords are capped at both ends with fiber connectors. FC, SC, LC and ST are the commonly used connector types for PM fiber termination. According to the connectors on the both ends, there are many different kinds of PM fiber patch cords, such as LC-FC, SC-FC, or FC-FC PM fiber patch cords. Classification by fiber type―PM fiber patch cords are built with polarization maintaining fiber. To ensure the polarization of both the input and output light in a PM fiber, several different shapes of rod are used, and the resulting fiber is sold under brand names such as "Panda" and "Bow-tie". With different PM fiber, there are corresponding PM fiber patch cords, such as Panda PM fiber patch cords and Bow-tie PM fiber patch cords. Classification by cable type―PM fiber patch cords can also be categorized according to the cable types. There are mainly three kinds of cable types, 250um bare fiber, 900um loose tube jacket and 3mm loose tube jacket. So based on the cable types, there are 3 kinds of PM fiber patch cords. Classification by fiber length―The standard length is 1 meter. It can vary for special requirements. The length of PM fiber patch cords can be custom made. Applications of PM Fiber Patch Cords PM fiber patch cords are often used in polarization sensitive fiber optical systems for transmission of light that requires the PM state to be maintained. PM optical patch cord is a special optical component using the properties of optical fibers specially manufactured so that its transmission parameters can support a particular application. They have a large number of uses, including high-data-rate communications systems, polarization sensitive components, and interferometric sensors. They are also widely used in PM fiber amplifiers, fiber lasers, high speed communication systems, testing equipment and instrumentation applications. Area of use of PM fiber patch cords is very broad and includes equipment such as instrumentation, spectroscopy, aerospace, medical diagnostics and many other industrial applications.
- 3. WHITE PAPER Fiberstore White Paper | The Basics of PM Fiber Patch Cords 3 Conclusion Understanding polarization has become a necessity in today’s fiber optic communication systems and applications. Knowing more about PM fiber patch cord can help you to choose. Fiberstore is a professional manufacturer and supplier, which offers a large amount of fiber optic patch cables. There are various fiber jumpers with different connector types for you to choose, like LC-LC fiber patch cord, SC fiber patch cable, and SC to LC patch cord. Our fiber optic patch cords are made and custom to order worldwide. Contact Us Manufacturing R & D (China) Eastern Side, Second Floor, Science & Technology Park, No.6, Keyuan Road, Nanshan District, Shenzhen 518057, China Tel: +86 (755) 8300 3611 Fax: +86 (755) 8326 9395 Email: sales@fiberstore.com APAC Office (Hong Kong) 1220 Tung Chun Commercial Centre, 438-444 Shanghai Street, Kowloon, HongKong Tel: +852 81763606 Fax: +852 81763606 Email: sales@fiberstore.com North America (United States) 331 Andover Park East Ste330, Tukwila, WA 98188,United States Tel: +1-425-226-2035 Fax: +1-253-246-7881 Email: sales@fiberstore.com London Office (United Kingdom) Third Floor 207 Regent Street, London, W1B 3HH, United Kingdom Tel: +44 2081441980 Notice: This document is for informational purposes only and does not set forth any warranty, expressed or implied, concerning any equipment, equipment features, or service offered or to be offered by Fiberstore. Fiberstore reserves the right to make changes to this document at any time, without notice, and assumes no responsibility for its use. This information document describes features that may not be currently available. Contact a Fiberstore sales team for information on feature and product availability. Follow us LinkedIn Twitter Facebook G+ Pinterest Youtube Blog