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Full Bandwidth Measurement of Supercontinuum Spectral Phase Coherence in Long Pulse Regime |
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| Authors: | Di Yang Cesare Soci Xuan Quyen Dinh Ming Tang Ping Perry Shum |
| Institution: | 1. OPTIMUS, Photonics Centre of Excellence, Nanyang Technological University, Singapore;2. Huazhong University of Science and Technology, Wuhan, China;3. Centre for Disruptive Photonic Technologies, Nanyang Technological University, Singapore;4. CINTRA CNRS/NTU/THALES, UMI 3288, Singapore;5. Thales Solutions Asia Pte. Ltd., Singapore;6. Wuhan National lab for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan, China;7. CINTRA CNRS/NTU/THALES, UMI 3288, Singapore |
| Abstract: | AbstractThis article reports that spectral phase coherence in the supercontinuum in long pulse regime can be measured simply and effectively by using an interference technique with the help of a Mach–Zehnder interferometer. It is also demonstrated that chromatic dispersion on the fringe visibility of interference spectral patterns is overcome in the setup. The technique is applied to characterize supercontinuum spectral phase coherence in a highly non-linear optical fiber with different input conditions: unseeded, coherent seeded, and incoherent seeded picosecond pumps. The results confirm the phase coherence characteristic predicted theoretically in previous studies. |
| Keywords: | modulation instability non-linear optics phase coherence supercontinuum generation |