Components White Papers

SMA Connector

Choosing the Right Connector for Your Fiber-Coupled Laser Diode

Please provide the following information to download the White Paper.

Having trouble deciding which fiber-coupling connection is best for you? Check out our newest white paper, titled “Choosing the Right Connector for Your Fiber-Coupled Laser Diode.”  In this paper, we review:

Image Choosing Right Connector Fiber-Coupled Laser Diode SMA FC Fiber-Coupled Connectors



  • Pros and cons of the most common fiber optic connectors
  • Importance of the self-centering ferrule
  • Pros and cons of the two main connector styles – FC and SMA
  • Importance of physical contact and polishing angle in regard to coupling efficiency and back reflections



There are two main categories of fiber-coupled laser diodes, pigtailed and detachable. The pigtailed approach provides significant advantages when it comes to alignment stability, mainly when dealing with single-mode fibers which, typically have a core diameter of less than 10 microns. By comparison, it is impossible to ensure that detachable fiber-optics will line up in the same spot, each time the fiber is connected. Therefore, reducing the overall coupling efficiency of the system. However, unless the pigtail is fusion spliced to another fiber, for both pigtailed and detachable fibers, it is required that at least one end of the cable be terminated with a fiber-optic connector. As a result, it is essential to understand the different types of fiber connectors used with fiber-coupled diode lasers as well as their pros and cons.

After reading this white paper, you will come away with an in-depth understanding of the optomechanical structure of fiber optic connectors, their variants and tolerances, and which of these will better suit your needs.

If you have any questions, or would like assistance with anything, click below or talk to a knowledgeable laser Product Manager today by calling us at 636.272.7227 !