Passive mode-locking by use of waveguide arrays |
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Authors: | Proctor Joshua L Kutz J Nathan |
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Institution: | Department of Applied Mathematics, University of Washington, Seattle, Washington 98195-2420, USA. |
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Abstract: | A novel mode-locking technique is presented in which the intensity-dependent spatial coupling dynamics of a waveguide array is used to achieve temporal mode-locking in a passive optical fiber laser. By use of the discrete, nearest-neighbor spatial coupling of the waveguide array, low-intensity light can be transferred to the neighboring waveguides and ejected (attenuated) from the laser cavity. In contrast, higher-intensity light is self-focused in the waveguide and remains largely unaffected. Numerical studies of this pulse shaping mechanism (intensity discrimination) show that using current waveguide arrays and standard optical fiber technology produces stable and robust mode-locked soliton-like pulses. |
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