公开(公告)号：US20240272000A1

公开(公告)日：2024-08-15

申请号：US18441765

申请日：2024-02-14

Applicant: University of Central Florida Research Foundation, Inc.

Inventor： Stephen Eikenberry ,  Rodrigo Amezcua-Correa ,  Daniel Cruz-Delgado ,  Stephanos Yerolatsitis ,  Matthew Cooper ,  Miguel A. Bandres

IPC: G01J3/28 ,  G01J3/02 ,  G01J3/14

CPC classification number: G01J3/2823 ,  G01J3/0218 ,  G01J3/14

Abstract: A sensor may include one or more photonic lanterns, each including a waveguide structure with a single input waveguide at an input end and two or more output waveguides at an output end, where the two or more output waveguides of each of the one or more photonic lanterns are optically decoupled. A distribution of intensities of light exiting two or more output waveguides of each of the one or more photonic lanterns may correspond to a modal decomposition of input light coupled into the input waveguide of the corresponding one of the one or more photonic lanterns. The sensor may further include one or more spectrometers coupled to the two or more output waveguides of the one or more photonic lanterns to provide a wavelength-resolved modal decomposition of the input light.

公开(公告)号：US20220158405A1

公开(公告)日：2022-05-19

申请号：US17455726

申请日：2021-11-19

Applicant: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.

Inventor： Steffen Wittek ,  Juan Carlos Alvarado Zacarias ,  Daniel Cruz Delgado ,  Jose Enrique Antonio Lopez ,  Rodrigo Amezcua Correa ,  Matthew Cooper

IPC: H01S3/067

Abstract: Apparatus and methods for mitigating transverse mode instabilities (TMI) in high power fiber amplifiers that does not depend on active feedback loops. The apparatus and method involve the modulation of the amplitude and/or phase of selected spatial mode components of an input signal beam to increase the TMI threshold of the amplifier. Once the desired modal adjustments are made, the beam is input to a mode multiplexer whereupon an optimized output beam can be input to the active fiber of the amplifier system. By increasing the TMI threshold of the amplifier, the amplifier can be operated at higher power before TMI sets in. A control stage of the fiber amplifier system includes (a) a (seed) beam splitting section; (b) an amplitude and phase control component; and (c) a mode multiplexer that maps multiple individual signal beams to different fiber modes.