کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11002589 | 1444918 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Research on photonic generation of quadrupling triangular-shaped waveform using external modulation
ترجمه فارسی عنوان
تحقیق در زمینه تولید نسپس شکل موج موج چهارگانه با استفاده از مدولاسیون خارجی
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
شبکه های کامپیوتری و ارتباطات
چکیده انگلیسی
We propose an improved approach to generate frequency-quadrupled triangular-shaped waveform signals based on two cascaded modulators. A dual-parallel Mach-Zehnder modulator (DP-MZM) is employed to provide the quadrupling RF modulation, after which two primary optical sidebands (±2nd) are generated in spectrum. Then a dual-drive Mach-Zehnder modulator (DD-MZM) is followed to perform the optical double sideband (ODSB) modulation and signal with four sidebands (±2nd and ±6th) is obtained. By adjusting modulation index carefully, the power ratio of ±2nd and ±6th sidebands can be tuned to 9.5â¯dB. A piece of single mode fiber (SMF) is applied to remove the undesired harmonic. The expression of optical intensity is approximately equal to the Fourier expansion of ideal triangular-shaped waveform. The principle is illustrated by theory, simulation, and experiment. Finally, triangular-shaped waveform signals with repetition rate of 8â¯GHz, 12â¯GHz, 16â¯GHz and 20â¯GHz are generated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Fiber Technology - Volume 45, November 2018, Pages 352-358
Journal: Optical Fiber Technology - Volume 45, November 2018, Pages 352-358
نویسندگان
Jin Yuan, Tigang Ning, Jing Li, Li Pei, Jingjing Zheng, Yueqin Li,