Second-order optical differentiator using mechanically-induced LPFG with a single π-shift

Cong YIN; Xiaojun ZHOU; Zhiyao ZHANG; Shenghui SHI; Sixian JIANG; Liu LIU; Tingpeng LUO; Yong LIU

doi:10.1007/s12200-012-0272-z

[1] Yao J P. Microwave photonics. Journal of Lightwave Technology, 2009, 27(3): 314-335

[2] Li Z Y, Wu C Q. All-optical differentiator and high-speed pulse generation based on cross-polarization modulation in a semiconductor optical amplifier. Optics Letters, 2009, 34(6): 830-832

[3] Xu J, Zhang X L, Dong J J, Liu D M, Huang D X. All-optical differentiator based on cross-gain modulation in semiconductor optical amplifier. Optics Letters, 2007, 32(20): 3029-3031

[4] Velanas P, Bogris A, Argyris A, Syvridis D. High-speed all-optical first- and second-order differentiators based on cross-phase modulation in fibers. Journal of Lightwave Technology, 2008, 26(18): 3269-3276

[5] Liu F, Wang T, Qiang L, Ye T, Zhang Z, Qiu M, Su Y. Compact optical temporal differentiator based on silicon microring resonator. Optics Express, 2008, 16(20): 15880-15886

[6] Preciado M A, Muriel M A. Design of an ultrafast all-optical differentiator based on a fiber Bragg grating in transmission. Optics Letters, 2008, 33(21): 2458-2460

[7] Kulishov M, Azaa J. Long-period fiber gratings as ultrafast optical differentiators. Optics Letters, 2005, 30(20): 2700-2702

[8] Slavik R, Park Y, Kulishov M, Azaa J. Terahertz-bandwidth highorder temporal differentiators based on phase-shifted long-period fiber gratings. Optics Letters, 2009, 34 (20): 3116-3118

[9] Zheng K, Li P. S.S. Jian Research on the characteristics of longperiod fiber grating ultraviolet-written by amplitude mask. Acta Optica Sinica, 2004, 24(7): 902-906

[10] Gu Y, Chiang K S, Rao Y J.Writing of apodized phase-shifted longperiod fiber gratings with a computer-controlled CO2 laser. IEEE Photonics Technology Letters, 2009, 21(10): 657-659

[11] Humbert G, Malki A. High performance bandpass filters based on electric arc-induced-shifted long-period fiber gratings. Electronics Letters, 2003, 39(21): 1506-1507

[12] Savin S, Digonnet M J F, Kino G S, Shaw H J. Tunable mechanically induced long-period fiber gratings. Optics Letters, 2000, 25(10): 710-712

[13] Zhou X J, Shi S, Zhang Z, Zou J, Liu Y. Mechanically-induced π- shifted long-period fiber gratings. Optics Express, 2011, 19(7): 6253-6259

[14] Zhou X J, Shi S H, Zhang Z Y, Fang K, Yang F, Song Z, Liu Y. Optical differentiator based on mechanically-induced long-period fiber-gratings. In: Proceedings of IEEE 2011 International Topical Meeting on Microwave Photonics. 2011, 18-21