Spectral Power Enhancement in a 100 GHz Photonic Millimeter-Wave Generator Enabled by Spectral Line-by-Line Pulse Shaping

IEEE Photonics Journal

F.-M. Kuo¹  H.-C. Chiang²  C.-L. Pan³  N.-W. Chen⁴  H.-J. Tsai⁵  J.-W. Shi⁵  H.-K. Chiou⁵  C.-B. Huang⁶  H.-P. Chuang⁶ 

[1] $^{1}$Department of Electrical Engineering, National Central University, Taoyuan, Taiwan;$^{2}$Institute of Photonics Technologies , National Tsing-Hua University, Hsinchu, Taiwan;$^{3}$Department of Physics, National Tsing-Hua University, Hsinchu, Taiwan;$^{4}$Department of Communications Engineering, Yuan Ze University, Zhongli, Taiwan;Dept. of Electr. Eng., Nat. Central Univ., Taoyuan, Taiwan;Inst. of Photonics Technol., Nat. Tsing-Hua Univ., Hsinchu, Taiwan;

关键词: Microwave photonics signal;    optical communications;    photodetectors;    pulse shaping;   

DOI  :  10.1109/JPHOT.2010.2064160

来源: DOAJ

【 摘 要 】

We report generation of high-modulation-depth photonic millimeter-wave (MMW) waveforms by applying line-by-line pulse shaping on a phase-modulated continuous-wave frequency comb. The optimized 20 and 100 GHz optical waveforms are then converted into electrical MMW signals using a near-ballistic uni-traveling-carrier photodiode (NBUTC-PD). A 7.4 dB MMW power enhancement is experimentally achieved by using 2.6 ps optimized pulses at a 100 GHz repetition rate, as compared with excitation by a conventional sinusoidal signal for the NBUTC-PD operated at the same photocurrent. This is in qualitative agreement with a theoretical analysis of spectral power enhancement by optical short pulses comprised of equi-amplitude frequency lines over sinusoidal excitation.

【 授权许可】

Unknown