Linear and non-linear propagation of ultrashort pulses in a seven-core fiber was investigated experimentally and numerically in a normal dispersion regime. We observed non-uniform coupling conditions between different cores that may be the result of a random refractive index deviation. It was characterized by measurements of the power distribution and FROG traces at the output of a multicore fiber. The cores were excited by a spatial light modulator using the weighted Gerchberg-Saxton algorithm to generate phase masks. It allows us to switch-on any combination without manual alignment of the experimental setup. Finally, as the input power increased, a nonlinear coupling was observed between the selected cores, similar to a saturable absorber. So we believe that such a device could be useful for a development of high-power ultrashort fiber lasers and pulse shaping applications.
We demonstrated how the nonlinear Fourier transform based on the Zakharov-Shabat spectral problem can be used to characterise coherent structures in dissipative systems. We consider as a particular, albeit important practical example model equation that is widely used to analyse laser radiation and demonstrate that dissipative solitons can be described by a limited number of degrees of freedom { discrete eigenvalues. Our approach can be applied for signal processing in a number of optical systems, from lasers to micro-resonators.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.