Photoinduced Birefringence and Broadband All-Optical Photonic Switch in a Bacteriorhodopsin/Polymer Composite Film
WEI Lai1, TENG Xue-Lei1, LU Ming1, ZHAO You-Yuan1, MA De-Wang2, DING Jian-Dong2
1State Key Laboratory for Advanced Photonic Materials and Devices, and Department of Optical Science and Engineering, Fudan University, Shanghai 2004332Key Laboratory of Molecular Engineering of Polymers of Ministry of Education, Department of Macromolecular Science, Advanced Materials Laboratory, Fudan University, Shanghai 200433
Photoinduced Birefringence and Broadband All-Optical Photonic Switch in a Bacteriorhodopsin/Polymer Composite Film
1State Key Laboratory for Advanced Photonic Materials and Devices, and Department of Optical Science and Engineering, Fudan University, Shanghai 2004332Key Laboratory of Molecular Engineering of Polymers of Ministry of Education, Department of Macromolecular Science, Advanced Materials Laboratory, Fudan University, Shanghai 200433
摘要Photoinduced birefringence with large optical nonlinearity in a bacteriorhodopsin/polymer composite film is observed. A high refractive index change of 8.5×10-5 photoinduced by 476nm pumping beam is reached at the low intensity of 6.5mW/cm2. Based on it, a broadband all-optical photonic switch is realized with an optical controlling switch system. Because of controlling beam's selectivity in switching, the transporting beams of different wavelengths with different intensities and shapes can be modulated by adjusting the wavelength and intensity of the controlling beam.
Abstract：Photoinduced birefringence with large optical nonlinearity in a bacteriorhodopsin/polymer composite film is observed. A high refractive index change of 8.5×10-5 photoinduced by 476nm pumping beam is reached at the low intensity of 6.5mW/cm2. Based on it, a broadband all-optical photonic switch is realized with an optical controlling switch system. Because of controlling beam's selectivity in switching, the transporting beams of different wavelengths with different intensities and shapes can be modulated by adjusting the wavelength and intensity of the controlling beam.
[1] Birge R R 1981 Ann. Rev. Biophys. Bioeng. 10315 [2] Hampp N 2000 Chem. Rev. 100 1755 [3] Korchemskaya E Y, Stepanchikov D A, Druzhko A B andDyukova T V 1999 J. Biol. Phys. 24 201 [4] Ferrari J A, Garbusi E, and Frins E M 2004 Opt.Lett. 29 1138 [5] Reddya K P J 1996 J. Appl. Phys. 35 1848 [6] Huang Y H, Zhao Y Y, Yang O et al 2003 Chin. Phys.Lett. 20 959 [7] Zhang C P, Gu L Q et al 2003 Chin. Phys. Lett. 20 2161 [8] Wang Y L, Yao B L et al 2005 Chin. Phys. Lett. 22 1121 [9] Huang Y H, Siganakis G, Moharam M G J and Wu S T 2004 Opt. Lett. 29 1933 [10] Huang Y Y, Wu S T and Zhao Y Y 2004 Appl. Phys.Lett. 84 2028 [11] Chen G Y, Zhang C P, Shang X D, Guo Z X, Wang X Y, Tian JG and Song Q W 2005 Opt. Commun. 149 563-568
2007, Vol. 24 
