| 1. | multimode interference ( mmi ) coupler in soi was researched in depth
论文研制了soi材料上的多模干涉器。 |
| 2. | A new tapered multimode interference ( mmi )-based coherent lightwave combiner is reported
摘要报道了一个新的基于锥形多模干涉的相干光波合波器。 |
| 3. | A chirp grating is placed inside a multimode interference ( mmi ) structure to shorten the device length and increase wavelength tolerance
?了缩短组件长度并增加波长变动容忍度，我们在多模干涉结构里面旋转一个周期渐变光栅。 |
| 4. | In this thesis, optical couplers consisting of multimode interference ( mm ! ) coupler, y branch, directional coupler ( dc ) and mach zehnder interferometer ( mzi ) were analyzed and simulated
本论文对各种平面波导型耦合器：mmi、分支波导、定向耦合器和mach-zehnder进行了模拟和优化设计。 |
| 5. | They are usually applied to optical signal distribution systems . such as cable television, broadcasting systems and pon systems . in this thesis, y-branch and multimode interference in soi technology are studied and simulated
因为它在光通信系统、光纤用户网、光纤catv、光无源网络(pon)、光局域网等领域中被广泛应用。 |
| 6. | multimode interference ( mmi ) couplers based on the self-imaging effect are rapidly getting popular because of the advantage of low loss, compact size and large fabrication tolerance . the thesis studied the principle of the mmi coupler . the optical field distribution in the multimode wave-guide is modeled by eim and mode propagation analysis method ( mpa )
本文介绍了矩形多模干涉耦合器的基本原理，采用有效折射率方法和导模传输分析方法模拟了多模波导中的光场分布，设计并模拟12，14对称干涉型光功率分配器、22配对干涉型光功率分配器，得到了比较均衡的功率输出。 |
| 7. | The numerical and experimental results of this y-branch structure indicate that the proposed y-branch structure, without extra fabrication technologies, has a lower excess loss as compared with the conventional ones . optimal designs of the structural parameters for the multimode interference coupler are carried out . low loss and high uniformity of the multimode interference couplers are achieved when the waveguide is weakly guiding
研究了y分支耦合器中分支顶端间距(为工艺制作方便)带来的附加损耗，提出了低损耗新型y分支耦合器结构，并给出了相关结构参数的优化设计方法，我们的理论计算和实验测试结果均表明，该新型结构可以在常规光波导制作工艺下提高器件的指标。 |
| 8. | The numerical and experimental results of this y-branch structure indicate that the proposed y-branch structure, without extra fabrication technologies, has a lower excess loss as compared with the conventional ones . optimal designs of the structural parameters for the multimode interference coupler are carried out . low loss and high uniformity of the multimode interference couplers are achieved when the waveguide is weakly guiding
研究了y分支耦合器中分支顶端间距(为工艺制作方便)带来的附加损耗，提出了低损耗新型y分支耦合器结构，并给出了相关结构参数的优化设计方法，我们的理论计算和实验测试结果均表明，该新型结构可以在常规光波导制作工艺下提高器件的指标。 |
