新型双包层光子晶体光纤及激光玻璃的特性研究
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摘要
随着信息技术的进步,光纤通信网络正在向高速率、大容量发展,实际应用对光纤性能提出了越来越高的要求。双包层光子晶体光纤作为大功率激光器的传输载体,它的特性越来越受到人们的关注。此外,掺镱玻璃也是制作大功率激光器不可缺少的激光介质,人们开始试图将掺镱玻璃介质与光子晶体光纤相结合,制备超大功率的掺镱光子晶体光纤激光器。
本论文从理论上分别对新型双包层光子晶体光纤的色散特性和掺镱激光玻璃的光谱特性进行了分析。并且,采用坩埚高温熔融法制备了几种不同组份的掺镱激光玻璃,为制备大功率激光器奠定了基础。论文主要内容包括:
首先,以多极法理论为基础,设计了一种新型双包层结构的光子晶体光纤。通过改变其五层空气孔的三个结构参数(内层空气孔直径,外层空气孔直径,八边形孔间距),理论上实现了色散绝对值在1.32~1.7μm的波段内变化仅为1.55 ps/km/nm的平坦色散特性。并且在此基础上对其限制损耗进行了数值模拟。
其次,采用坩埚高温熔融法制备了一系列的掺镱硅酸盐激光玻璃,测试了硅酸盐玻璃的各项性能参数,分析了稀土离子掺杂浓度和玻璃组份变化对激光玻璃光谱特性的影响。
最后,对制备出的五种不同组份的掺镱硅酸盐激光玻璃的荧光光谱和吸收光谱进行了分析,从而获得了最佳玻璃组份和工艺条件,对今后的实验具有一定的指导意义。
With the development of information technology, The optical fiber communication network is evolving towards high speed and large capacity and the practical application proposed higher and higher request to the fiber performance. The double-cladding Photonic Crystal Fiber (PCF) which contacts with high-power laser is a important field investigated. Besides, Yb3+doped laser glass is also an indispensable medium of the high-power laser. With the birth of photonic crystal fiber, people start trying to make combination of Yb3+doped glass medium with Photonic Crystal Fiber because of its superior optical properties, which will be the ideal medium for the preparation of ultra-high-power lasers.
The dispersion characteristic of a new double-cladding Photonic Crystal Fiber and the characteristics of Yb3+doped laser glass are investigated respectively in this paper. Moreover, Yb3+doped glass is prepared by high-temperature crucible melting method and. has laid the foundation for the preparation of high-power laser .The main results are summarized as follows:
Firstly, based on multi-pole method, a kind of new double-cladding Photonic Crystal Fiber is put forward. It has been shown theoretically that it is possible to obtain ?attened dispersion within the wave band of 1.32 to 1.7μm by altering three parameters of the five-ring double-cladding PCF (the diameter of the inner ring holes, the diameter of the outer four rings holes, the pitch of the octagon), and the absolute value of dispersion coefficient merely changes 1.55 ps/km/nm. Moreover, simulation results show that this PCF can assume low confinement losses near the1550 nm wavelength range.
Secondly, a series of Yb3+doped silicate laser glass were prepared by high-temperature crucible melting method, the fluorescence spectra parameters such as spectral properties were tested. The impact of rare earth ions doping concentration and glass composition changes on the glass spectrum were analyzed.
Finally, The fluorescence spectrum and the absorption spectrum of five ingredients different mixed the Yb3+doped silicate laser glass have carried on the analysis, obtained an ingredient allocated which has the best data, laid the foundation for further experiment.
本论文从理论上分别对新型双包层光子晶体光纤的色散特性和掺镱激光玻璃的光谱特性进行了分析。并且,采用坩埚高温熔融法制备了几种不同组份的掺镱激光玻璃,为制备大功率激光器奠定了基础。论文主要内容包括:
首先,以多极法理论为基础,设计了一种新型双包层结构的光子晶体光纤。通过改变其五层空气孔的三个结构参数(内层空气孔直径,外层空气孔直径,八边形孔间距),理论上实现了色散绝对值在1.32~1.7μm的波段内变化仅为1.55 ps/km/nm的平坦色散特性。并且在此基础上对其限制损耗进行了数值模拟。
其次,采用坩埚高温熔融法制备了一系列的掺镱硅酸盐激光玻璃,测试了硅酸盐玻璃的各项性能参数,分析了稀土离子掺杂浓度和玻璃组份变化对激光玻璃光谱特性的影响。
最后,对制备出的五种不同组份的掺镱硅酸盐激光玻璃的荧光光谱和吸收光谱进行了分析,从而获得了最佳玻璃组份和工艺条件,对今后的实验具有一定的指导意义。
With the development of information technology, The optical fiber communication network is evolving towards high speed and large capacity and the practical application proposed higher and higher request to the fiber performance. The double-cladding Photonic Crystal Fiber (PCF) which contacts with high-power laser is a important field investigated. Besides, Yb3+doped laser glass is also an indispensable medium of the high-power laser. With the birth of photonic crystal fiber, people start trying to make combination of Yb3+doped glass medium with Photonic Crystal Fiber because of its superior optical properties, which will be the ideal medium for the preparation of ultra-high-power lasers.
The dispersion characteristic of a new double-cladding Photonic Crystal Fiber and the characteristics of Yb3+doped laser glass are investigated respectively in this paper. Moreover, Yb3+doped glass is prepared by high-temperature crucible melting method and. has laid the foundation for the preparation of high-power laser .The main results are summarized as follows:
Firstly, based on multi-pole method, a kind of new double-cladding Photonic Crystal Fiber is put forward. It has been shown theoretically that it is possible to obtain ?attened dispersion within the wave band of 1.32 to 1.7μm by altering three parameters of the five-ring double-cladding PCF (the diameter of the inner ring holes, the diameter of the outer four rings holes, the pitch of the octagon), and the absolute value of dispersion coefficient merely changes 1.55 ps/km/nm. Moreover, simulation results show that this PCF can assume low confinement losses near the1550 nm wavelength range.
Secondly, a series of Yb3+doped silicate laser glass were prepared by high-temperature crucible melting method, the fluorescence spectra parameters such as spectral properties were tested. The impact of rare earth ions doping concentration and glass composition changes on the glass spectrum were analyzed.
Finally, The fluorescence spectrum and the absorption spectrum of five ingredients different mixed the Yb3+doped silicate laser glass have carried on the analysis, obtained an ingredient allocated which has the best data, laid the foundation for further experiment.
引文
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2 S. John. Strong Localization of Photons in Certain Disordered Dielectric Supper Lattices. Phys. Rev. Lett.,1987,58(23):2486-2489
3 E. Yablonovitch, T. J. Gmitter. Photonic Band Structure: the Face-centered-cubic Case. Phys. Rev. Lett.,1989,63(18):1950-1953
4 J. C. Knight, T. A. Birks, P. St. J. Russell, et al. All-Silica Single-Mode Optical Fiber with Photonic Crystal Cladding. Optics Letters,1996,21(19):1547-1549
5 P. Russell. Photonic Crystal Fibers. Science,2003,299(5605):358-362
6 J. C. Knight, J. Broeng, T. A. Birks, et al. Photonic Band Gap Guidance in Optical Fibers. Science,1998,282:1476-1478
7 T. A. J. Broeng, S. E. Barkou, T. Sondergaard. Analysis of Air-Guiding Photonic Band- gap Fibers. Optics Letters,2000,25(2):96-98
8 A. Aguirre, N. Nishizawa, J. Fujimoto, et al. Continuum Generation in a Novel Photonic Crystal Fiber for Ultrahigh Resolution Optical Coherence Tomography at 800 nm and 1300 nm. Optics Express,2006,14(3):1145-1160
9 J. C. Knight. All-silica single-mode optical fiber with photonic crystal cladding. Optics Letters,1996,21(19):1547-1549
10 T. A. Birks, J. C. Knight, P. St. J. Russell. Endlessly single-mode photonic crystal fiber. Optics Letters,1997,22(13):961-963
11 J. C. Knight. Anomalous dispersion in photonic crystal fiber. IEEE Photonics Technology Letters,2000,12(7):807-809
12 A. Fernando. Nearly zero ultra-flattened dispersion in photonic crystal fibers. Optics Letters,2000,25(11):790-792
13 N. G. R. Broderick. Nonlinearity in holey optical fibers: measurement and future opportunities. Optics Letters,1999,24(20):1395-1397
14 N. A. Mortensen. Improved large-mode-area endlessly single-mode photonic crystal fibers. Optics Letters,2003,28(6):393-395
15 A. Ortigosa Blanch. Highly birefringent photonic crystal fibers. Optics Letters,2000,25(18):1325-1327
16 B. J. Mangan. Experimental study of dual-core photonic crystal fiber. Electronics Letters,2000,36(16):1358-1359
17 J. Y. Y. Leong. High-nonlinearity dispersion-shifted lead-silicate holey fibers for efficient 1um pumped supercontinuum generation. Journal of Lightwave Technology, 2006,24(1):183-190
18 J. C. Zhao, J. Bao, T. A. Birks, et al. Photonic band gap guidance in fibers. Science,2006,282(5393):1276-1278
19 J. Snitzer, J. Broeng, T. A. Birks, et al.Double-cladding Photonic Crastal Fibers. Science,1988,282(5393):1476-1478
20 J. Wang, Chun Jiang, Weisheng Hu, et al. Modified design of photonic crystal fibers with flattened dispersion. Opt. Laser Technol,2006,38(3):169-172
21 T. Fujisawa, Kunimasa Saitoh, Keisuke Wada, et al. Chromatic dispersion profile optimization of dual-concentric-core photonic crystal fibers for broadband dispersion compensation. Opt. Express,2006,14(2):893-900
22 H. Ebendorff-Heidepriem, P. Petropoulos, S. Asimakis, et al. Bismuth glass holey fibers with high nonlinearity. Opt. Express,2004,12(21):5082-5087
23 J. Riis Folkenberg, Niels Asger Mortensen, Kim P. Hansen, et al. Experimental investigation of cutoff phenomena in nonlinear photonic crystal fibers. Opt. Lett. , 2003,28(20):1882-1884
24 K. Saitoh, Masanori K. Highly nonlinear dispersion-flattened photonic crystal fibers for supercontinuum generation in a telecommunication window. Opt. Express, 2004,12(10):2027-2032
25 V. V. Ravi Kanth Kumar, A. K. George, W. H. Reeves, et al. Extruded soft glass photonic crystal fiber or ultrabroad supercontinuum generation. Opt. Express, 2002,10(25):1520–1525
26 B. Kuhlmey, G. Renversez, D. Maystre. Chromatic Dispersion and Losses of Microstructured Optical Fibers. Appl. Opt,2003,42(4):634-639
27 J. Chen, J. Arriaga, T. A. Birks, et al. Dispersion in Photonic Crystal Fiber. IEEE Photon. Technol .Lett,2003,12(7):802-803
28 M. Moenster, Günter Steinmeyer, Rumen Iliew, et al. Analytical Relation Between Effective Mode Field Area and Waveguide Dispersion in Microstructure Fibers. OpticsLetters,2006,31(22):3249-3251
29 K. Saitoh, M. Koshiba, T. Hasegawa, et al. Chromatic Dispersion Control in Photonic Crystal Fibers: Application to Ultra-flattened Dispersion. Opt. Express, 2003, 11(8):843-852
30 A. Cucinotta, S. Selleri, L. Vincetti, et al. Perturbation Analysis of Dispersion Properties in Photonic Crystal Fibers Through the Finite Element Method. J. Lightwave Technol.,2002,20(8):1433-1422
31 A. Ortigosa-Blanch, J. C. Knight, W. J. Wadsworth, et al. Highly Birefringent Photonic Crystal Fibers, Opt.Lett.,2000,25(18): 1325-1327
32 D. Mogilevtsev, J. Broeng, S. Ebarkou, et al. Design of Polarization Preserving Photonic Crystal Fibers with Elliptical Pores, Appl.Opt.,2001,3:S141–S143
33 P. R. Chaudhuri, V. Paulose, C. L. Zhao, et al. Near-Elliptic Core Polarization Maintaining Photonic Crystal Fiber: Modeling Birefringence Characteristics and Realization, IEEE Photon. Techno. Lett.,2004,16(5):1301-1303
34 K. Suzuki, H. Kubota, S. Kawanishi, et al. Optical Properties of a Low-Loss Polarization-Maintaining Photonic Crystal Fiber. Opt .Express,2001,9(16):676-680
35 A. O. Blanch, J. C. Knight, W. J. Wadsworth, et al. Highly Birefringence Photonic Crystal Fibers. Optics Letters,2000,25(18):1325-1327
36 B. Andersen, T. Tokle, Y. Geng, et al. Wavelength Conversion of a 40-Gb/s RZ-DPSK Signal Using Four-Wave Mixing in a Dispersion-Flattened Highly Nonlinear Photonic Crystal Fiber. IEEE Photonics Technology Letters,2005,17(9):1908-1910
37李曙光,冀玉领,周桂耀等.多孔微结构光纤中飞秒激光脉冲超连续谱的产生.物理学报,2004,53(2):478-483
38 S. V. Smirnov, J. D. Castanon. Optical Spectral Broadening and Supercontinuum Generation in Telecom Applications. Optical Fiber Technology,2006,12(56):122-147
39 F. Brechet, J. Marcou, D. Pagnoux, et al. Complete Analysis of the Characteristics of Propagation into Photonic Crystal Fibers by the Finite Element Method. Optical Fiber Technology,2000,6(2):181-191
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