摘要：本文对用液相外延技术制作半导体激光器时所遇到的非平面ＩｎＰ固－液相界及在不同平面上满足不同的界面反应速度情况做了严格的理论分析，它可以对实际非平面ＩｎＰ生长所遇到的各种情况给出准确的解释．此外，对理论结果进行了数值模拟计算，对界面反应速度作适当拟合之后，得到了与实验一致的结果，从而验证了理论的正确性，可以其作为实际非平面ＩｎＰ液相外延生长时工艺设计与参数选择的依据．

摘要：在对长周期光纤光栅的光学特性进行分析的基础上 ,通过适当设计的程控自动扫描曝光系统 ,采用具有高度灵活性的逐点写入技术在经过氢载处理的普通单模光纤上成功地进行了长周期光纤光栅的研制。随后对氢载光纤中长周期光纤光栅的稳定性问题进行了分析与研究。

摘要：A type of multi-core Er-doped photosensitive silica optical fiber （MC-EDPF） is proposed and fabricated, in which a high consistency Er-doped core is surrounded by six high consistency Ge-doped cores. The multi-core design can overcome the difficulties encountered in the design and fabrication of single-core EDPFs through a modified chemical vapor deposition method combined with solution doping technology, and there is a conflict between high consistency Er doping and high consistency Ce doping. The absorption of MC-EDPFs achieved 15.876dB/m at 1550mm and lOdB/m at 98Ohm. The refleetivity of the fiber Bragg gratings （FBCs） written directly on the MC-EDPFs is as much as 96.84%.

摘要：We propose a new structure of broadband nearly-zero flattened dispersion highly nonlinear photonic crystal fiber （PCF）. Through optimizing the diameters of the first two inner rings of air-holes and the GeO2 doping concentration of the core, the nonlinear coefficient is up to 47 W^-***^-1 at the wavelength of 1.55 um and nearly-zero flattened dispersion of ±0.5 ps/（nm·km） is achieved in the telecommunication window （1460 - 1625 nm）. Due to the use of GeO2-doped core, this innovative structure can offer not only a large nonlinear coefficient and broadband nearly-zero flattened dispersion but also low leakage losses.

摘要：A novel approach for the design of phosphor-free single-chip white light-emitting diodes （LEDs） is proposed by employing InAIGaN irregular multiple quantum well （IMQW） structures. The electronic and optical properties of the designed InA1GaN IMQWs are analyzed in detail by fully considering the effects of strain, well-coupling, valence band-mixing, and quasi-bound states using the effective-mass Hamiltonian deduced from k. p theory. For comparison, three different types of InAIGaN IMQW structures with ultra-wide band spontaneous emission spectra are analyzed, and the results show that phosphor-free single-chip white light LEDs with more than 20Ohm emission band can be obtained using properly designed InAIGaN IMQW structures.

摘要：本文作者首次提出了一种可用于光纤传感器技术的、性能优越的新型金属包层光波导。试验和理论分析计算表明：当此圆柱形金属包层光波导的直径为２００μｍ时，其损耗为０．０６ｄＢ／ｍｍ，损耗随金属包层长度的增加而线性增加．在制做光纤传感器时，使被测参数的变化导致金属包层长度的变化；通过测量金属包层光波导的损耗就可以测出金属包层长度的变化，进而测出被测参数。由于光功率及损耗的测量原理简单、精度高、造价低，为光纤传感器提供了一种成熟、经济的测量探头，通过大量的试验和传感器试制证明具有此种探头的光纤传感器性能优越、制作方便，是一种难得的光电探头。

摘要：对用光学单三角法测量物体一维曲面轮廓的光电传感器作了详细的理论研究，指出了影响传感器灵敏度、动态范围的主要因素。并在分析的基础上提出一种改进的测量方法。

摘要：To improve the performance of double clad high power fibre lasers, inner cladding design plays a significant role. A triangular inner cladding and silica structure second cladding with large air holes go acquire high inner cladding numerical aperture are designed. Single mode and high power output of the fibre lasers need the double clad Yb doped fibre with large core. A fibre with annular refractive index distribution core and low numerical aperture to acquire a large mode area fibre core is designed and fabricated. Furthermore co-doping with aluminium （A1） has been used to improve the solubility of ytterbium （Yb） into silicate network, and the core absorption coefficients of two Yb doped fibres are compared with different A1 concentration experimentally.

摘要：提出一种基于Ｇａｌｅｒｋｉｎ方法的可对任意折射率剖面分布光纤的任意线偏振模计算的改进方法，文中给出了相应方法的详细理论推导，并对几个关键的光纤传输参量如传输常数、色散特性、模场半径等的数值计算方法作了改进，使运算效率有很大提高，这种方法可成为光纤分析与设计的有力工具。

摘要：我们建议一种新的色散补偿方法，由连接两种在１．５５μｍ工作窗口具有相反非零平坦色散值的色散互补光纤（ＬＤ－ＤＳＦ）作为高速、长距离光纤通信系统的传输媒介，这样的传输线能够有效地抵消传输线的色散和抑制非线性效应。我们设计并用ＭＣＶＤ工艺制备了在１．５５μｍ波长处分别具有±２ｐｓ／（ｎｍ·ｋｍ）色散的这些光纤ＬＤ－ＤＳＦ，连接后其总色散在１．５５μｍ波长处表现出０．０１８５ｐｓ／（ｎｍ２·ｋｍ）低的色散坡度。本文还对不同芯子结构的光纤所具有影响非线性的有效芯子面积（Ａｅｆｆ）进行了研究。