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High repetition rate femtosecond WDM pulse generation using direct space-to-time pulse shapers and arrayed waveguide gratings |
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| Authors: | DE Leaird AM Weiner S Shen A Sugita S Kamei M Ishii K Okamoto |
| Institution: | 1. School of Electrical & Computer Engineering, Purdue University, West Lafayette, IN, 47907-1285, USA 2. Center for Education and Research in Information Assurance and Security, CERIAS Purdue University, West Lafayette, IN, 47907 3. NTT Photonics Laboratories, 162 Tokai, Naka-gun, Ibaraki-pref., 319-1193, Japan |
| Abstract: | For the application of high repetition rate wavelength division multiplexed (WDM) pulse train generation from a femtosecond modelocked fiber laser, the direct space-to-time pulse shaper and a properly designed arrayed waveguide grating (AWG) are equivalent. The analogy between the bulk optics and integrated configuration is explored for this application. The critical design parameters of the AWG are the free spectral range and the pathlength difference between adjacent guides in the array. |
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