共查询到18条相似文献,搜索用时 937 毫秒
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采用传输函数法对硅基二氧化硅阵列波导光栅(AWG)的相位系统误差和随机误差进行了详细的分析.系统误差的模拟结果表明阵列波导的有效折射率和相邻阵列波导长度差ΔL的偏移将会对使中心波长λ0偏离设计值,平板波导有效折射率、阵列波导的间距、罗兰圆聚焦长度R的偏移会使通道间隔偏离设计值.随机误差的模拟结果表明相邻阵列波导长度差、阵列波导中芯区折射率、芯区宽度、芯区厚度的随机波动对AWG的串扰影响较大,而波导上、下包层折射率的波动对AWG串扰影响较小. 相似文献
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硅基二氧化硅阵列波导光栅相位误差数值分析 总被引:1,自引:1,他引:0
采用传输函数法对硅基二氧化硅阵列波导光栅(AWG)的相位系统误差和随机误差进行了详细的分析. 系统误差的模拟结果表明阵列波导的有效折射率和相邻阵列波导长度差ΔL的偏移将会对使中心波长λ0偏离设计值,平板波导有效折射率、阵列波导的间距、罗兰圆聚焦长度R的偏移会使通道间隔偏离设计值. 随机误差的模拟结果表明相邻阵列波导长度差、阵列波导中芯区折射率、芯区宽度、芯区厚度的随机波动对AWG的串扰影响较大,而波导上、下包层折射率的波动对AWG串扰影响较小. 相似文献
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采用离子束辅助沉积(IBAD)真空镀膜技术制备阵列波导光栅(AWG)波导材料。以固体石英玻璃材料作为衬底,采用离子束辅助沉积真空镀膜制备SiO2膜层,以实现偏振不敏感的阵列波导光栅。实验表明器件的偏振相关性大大改善,其双折射B约为1.4077×10-5,远小于二氧化硅-硅基波导结构阵列波导光栅的双折射B=2×10-4。器件的热稳定性也得以改善,当工作环境的温度变化范围为-10~70℃时,采用此方法研制的阵列波导光栅最大波长漂移为1.144 nm,小于普通的二氧化硅-硅基波导结构阵列波导光栅的波长漂移1.368 nm。 相似文献
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报道了一种在工艺制作过程中减小聚合物阵列波导光栅(AWG)器件光谱漂移的有效方法,通过调整波导芯层的旋涂转速来控制芯层的厚度进而可以有效地减小器件的光谱漂移.AWG器件的设计中心波长为1550.918 nm,制作的AWG器件的实际中心波长为1550.85 nm,即利用该方法使传输光谱的漂移减小到0.07nm,远远小于波长间隔0.8 nm,改善了器件的解复用功能. 相似文献
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研究一种新型无热化阵列波导光栅,这是由聚合物组成的一种新型阵列波导光栅。阵列波导光栅对温度的依赖性受波导物质的折射率、热膨胀系数和波导芯的尺寸影响,所以,通过调节这些参数就可以减小温度对阵列波导光栅的影响。优化得到全聚合物型阵列波导光栅在温度20℃~70℃范围内波谱漂移小于常规型AWG结构的0.5%。 相似文献
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Successful athermalisation of a silica arrayed waveguide grating (AWG) multiplexer using compensating longitudinal strain is reported. Peak wavelength shift of <0.04 nm is recorded over 5-70/spl deg/C in a 40/spl times/100 GHz device, representing a 95% reduction on standard silica AWGs, without introduction of birefringence or compromise of optical crosstalk. 相似文献
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Yaffe H.H. Henry C.H. Kazarinov R.F. Milbrodt M.A. 《Lightwave Technology, Journal of》1994,12(1):64-67
The birefringence induced by compressive strain in silica waveguides on silicon substrates is compensated with a silicon nitride patch placed below the core. We demonstrate Mach-Zehnder interferometers with polarization-independent spectral response, including a compensated Mach-Zehnder interferometer suitable for stabilization of multiple laser sources in a dense wavelength division multiplexed fiber optic communication network. Furthermore, we show how silicon nitride can also be used to compensate polarization dependent losses. Polarization independence achieved with a silicon nitride patch is applicable to a wide variety of other devices such as arrayed waveguide grating multiplexers and Bragg reflectors 相似文献
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We present a design of three-dimensional(3D) silica on a silicon single-mode single-polarization waveguide (SMSPW) by taking into consideration the induced birefringence effect of the silica.This can cut off the TM mode and transmit the TE mode.The characteristics of the light propagating across the polarization maintaining waveguide were simulated by 3D beam propagation methods(3D-BPM).The result showed that the SMSPW has a high extinction ratio over 50 dB for the TM mode.Without increasing the complexi... 相似文献