Nonlinear Spectrum Compression of Negatively Chirped Picosecond Pulses in Dispersion-Shifted Telecom Fiber
We investigated both experimentally and numerically self-phase modulation-induced spectrum compression dynamics of negatively chirped picosecond Gaussian pulses in the low-loss dispersion-shifted telecom fiber near its zero dispersion wavelength (ZDW). It was experimentally observed linearly interpo...
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IEEE
2020-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8957452/ |
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| author | Alexander Krylov Andrey Senatorov Yury Yatsenko |
| author_facet | Alexander Krylov Andrey Senatorov Yury Yatsenko |
| author_sort | Alexander Krylov |
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| description | We investigated both experimentally and numerically self-phase modulation-induced spectrum compression dynamics of negatively chirped picosecond Gaussian pulses in the low-loss dispersion-shifted telecom fiber near its zero dispersion wavelength (ZDW). It was experimentally observed linearly interpolated monotonous increase in spectrum compression ratio (SCR) with negative chirp growth of the incident pulse in the range from −5.9 to −91.9. According to numerical simulations, despite its small values in the vicinity of ZDW, fiber dispersion limits both SCR growth and spectrum compression quality expressed in terms of time-bandwidth product value and energy confinement ratio at larger chirp values (|C| > 100), in a combined action with self-phase modulation (SPM). Having optimized fiber length and pulse energy, we achieved record 49.2-fold spectrum compression of 38.3-ps, 2.08 nJ negatively chirped Gaussian pulses with compressed spectrum FWHM of 0.23 nm and ≈50% energy confinement at 1560 nm wavelength, leading to ≈13.3-times spectral brightness magnification. We believe that results obtained can be promising for ultra-short pulse laser systems development with enhanced spectral brightness. |
| format | Article |
| id | doaj-art-c2a064f90b4d44e2b30888fa08ec9d5d |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | IEEE |
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| series | IEEE Photonics Journal |
| spelling | doaj-art-c2a064f90b4d44e2b30888fa08ec9d5d2025-08-20T03:33:21ZengIEEEIEEE Photonics Journal1943-06552020-01-0112211510.1109/JPHOT.2020.29663018957452Nonlinear Spectrum Compression of Negatively Chirped Picosecond Pulses in Dispersion-Shifted Telecom FiberAlexander Krylov0https://orcid.org/0000-0003-3437-1187Andrey Senatorov1Yury Yatsenko2E. M. Dianov Fiber Optics Research Center of the Russian Academy of Sciences, Moscow, RussiaE. M. Dianov Fiber Optics Research Center of the Russian Academy of Sciences, Moscow, RussiaE. M. Dianov Fiber Optics Research Center of the Russian Academy of Sciences, Moscow, RussiaWe investigated both experimentally and numerically self-phase modulation-induced spectrum compression dynamics of negatively chirped picosecond Gaussian pulses in the low-loss dispersion-shifted telecom fiber near its zero dispersion wavelength (ZDW). It was experimentally observed linearly interpolated monotonous increase in spectrum compression ratio (SCR) with negative chirp growth of the incident pulse in the range from −5.9 to −91.9. According to numerical simulations, despite its small values in the vicinity of ZDW, fiber dispersion limits both SCR growth and spectrum compression quality expressed in terms of time-bandwidth product value and energy confinement ratio at larger chirp values (|C| > 100), in a combined action with self-phase modulation (SPM). Having optimized fiber length and pulse energy, we achieved record 49.2-fold spectrum compression of 38.3-ps, 2.08 nJ negatively chirped Gaussian pulses with compressed spectrum FWHM of 0.23 nm and ≈50% energy confinement at 1560 nm wavelength, leading to ≈13.3-times spectral brightness magnification. We believe that results obtained can be promising for ultra-short pulse laser systems development with enhanced spectral brightness.https://ieeexplore.ieee.org/document/8957452/Nonlinear spectrum compressionnegatively chirped pulsedispersion-shifted fibertelecom fiber |
| spellingShingle | Alexander Krylov Andrey Senatorov Yury Yatsenko Nonlinear Spectrum Compression of Negatively Chirped Picosecond Pulses in Dispersion-Shifted Telecom Fiber IEEE Photonics Journal Nonlinear spectrum compression negatively chirped pulse dispersion-shifted fiber telecom fiber |
| title | Nonlinear Spectrum Compression of Negatively Chirped Picosecond Pulses in Dispersion-Shifted Telecom Fiber |
| title_full | Nonlinear Spectrum Compression of Negatively Chirped Picosecond Pulses in Dispersion-Shifted Telecom Fiber |
| title_fullStr | Nonlinear Spectrum Compression of Negatively Chirped Picosecond Pulses in Dispersion-Shifted Telecom Fiber |
| title_full_unstemmed | Nonlinear Spectrum Compression of Negatively Chirped Picosecond Pulses in Dispersion-Shifted Telecom Fiber |
| title_short | Nonlinear Spectrum Compression of Negatively Chirped Picosecond Pulses in Dispersion-Shifted Telecom Fiber |
| title_sort | nonlinear spectrum compression of negatively chirped picosecond pulses in dispersion shifted telecom fiber |
| topic | Nonlinear spectrum compression negatively chirped pulse dispersion-shifted fiber telecom fiber |
| url | https://ieeexplore.ieee.org/document/8957452/ |
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