Currently, we are exploring a variety of novel optical fiber-based devices and subsystems for several of the above applications.  Specific areas of research include:

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• Narrow line-width fiber lasers and amplifiers

• Power scaling of fiber lasers and amplifier through coherent beam combination

• Generation and decomposition of optical beams with orbital angular momentum (OAM)

• Distributed acoustic sensing using coherent Rayleigh back-scattering

• Distributed strain/temperature sensing based on Raman/Brillouin scattering

• Acoustic emission sensing based on fiber Bragg grating sensors and interrogators

• Underwater optical communication

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