【摘 要】
：
With the help of the effective refractive index method we have numerically analyzed a multilayer planar waveguide structure and calculated the propagation const
【机 构】
：
State Key Laboratory of Functional Materials for Informatics
【基金项目】
：
国家重点基础研究发展计划(973计划);上海市科委资助项目
论文部分内容阅读
With the help of the effective refractive index method we have numerically analyzed a multilayer planar waveguide structure and calculated the propagation constants, confinement factors, and transverse electric (TE) modes. A five-layer waveguide model has been provided to analyze the electro-magne tic wave propagation process. The analysis method has been applied to the 980 nm laser with active layer of GaInAs/GaInAsP strained quantum wells, GaInAsP confinement layers and GaInP cap layers. By changing the thickness of confinement layers, we obtained confinement factor as high as 95% with higher TE modes TE1 and TE2. The results are in good agreement with the experiment by A. Al-Muhanna et al. and give the new idea to enhance output power of semiconductor lasers. The analysis method can also be extended to any other slab multilayer waveguide structures, and the results are useful to the fabrication of optic-electronic devices.
其他文献
A Petri net approach to determining the conditions for stability of a re-entrantsystem with buffer priority scheduling policy is described in this paper. The co
Piperonyl methyl ketone was obtained by oxidizing isosafrole with hydrogen peroxide and formic acid. Dianion of ethyl acetoacetate reacted with piperonyl methyl
Abundant new soliton-like and period form solutions for certain (3+1)-dimensional physically important nonlinear evolution equations are obtained by using a fur
The octupole excitations of β-stable nucleus 20882 Pb126, a neutron skin nucleus 6200Ca40 and a drip-line nucleus 288O20 are studied by using the self-consiste
The new technology of continuous casting by heated mold was used to produce dtirectional solidification ZA alloy lines to eliminate the inter defects of these l
The regioselective 1-O-deacylation of peracylated glycopyranoses 1a-d with zinc chloride and zinc oxide in THF/MeOH gave the corresponding tetra-O-acylglycopyra
The decomposition of methane on Ni/α-Al2O3 modified by La2O3 and CeO2 with different contents has been investigated and the ralationship between methane decomp
将铈 β 二酮络合物 (Ce(tmhd) 4)的氯仿溶液与花生酸 (AA)的氯仿溶液以不同摩尔比混合并铺展在纯水亚相上 ,得到其与AA的混合单分子膜 .对混合单分子膜的成膜特性 (π A等温
A new dendrobine-type alkaloid has been isolated from stems of Dendrobium nobile lindl.. Its structure has been identified on the basis of spectroscopic method.
The present paper deals with the facile synthesis of 6E-geranylgeraniol-19-oic acid(1), a naturally occuring alicyclic diterpene acid, by a Horner-Wadsworth-Emm