Non-circular optical fiber and mode shape converter and method

Patent · 24 May 2022

OSTI ID:1892964

Drachenberg, Derrek R.; Allen, Graham S.; Chen, Diana C.; Cook, Matthew J.; Crist, Robert P.; Dawson, Jay W.; Kiani, Leily; Messerly, Michael J.; Pax, Paul H.; Schenkel, Nick; Yu, Charles X.

A class of fibers is described that have a non-circular cross section on one or both ends that can by optimized to capture the optical radiation from a laser diode or diode array and deliver the light in the same or different shape on the opposite end of the fiber. A large multimode rectangular waveguide may be provided which can accept the radiation from a high-power diode bar and transform it into a circular cross section on the opposite end, while preserving brightness.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-07NA27344
• Assignee: Lawrence Livermore National Security, LLC (Livermore, CA)
• Patent Number(s): 11,340,396
• Application Number: 16/626,947
• OSTI ID: 1892964
• Country of Publication: United States
• Language: English