论文部分内容阅读
为满足2×N光功率分配器的制作和应用的需求,对宽带集成化2×2 3dB耦合器进行了深入的理论和实验研究。采用3-D光束传播法,对传统的非对称X结进行了模拟改进,设计了低损耗且具有较宽工作带宽的2×2 3dB耦合器。采用Ag+-Na+离子交换技术在玻璃基上成功制作了非对称X结结构的宽带2×2 3dB耦合器。通过对1260nm～1360nm和1460nm～1600nm两个波段宽带光源的光谱测试,得到在宽带范围内小于4.0dB的插入损耗,光谱谱线相对平坦,波长依赖性较小,均匀性小于0.5dB。结果表明,采用这种非对称X结并结合离子交换工艺,可以在玻璃基上制作出宽带的2×2 3dB耦合器,这为进一步优化器件性能,研制成功具有应用价值的器件奠定了基础。
In order to meet the needs of 2 × N optical power splitter production and application, the broadband integrated 2 × 2 3dB coupler has been deeply studied theoretically and experimentally. The 3-D beam propagation method is used to simulate the traditional asymmetric X-junction. A 2 × 2 3dB coupler with low loss and wide operating bandwidth is designed. A broadband 2 × 2 3dB coupler with asymmetric X-junction structure was successfully fabricated on glass substrate by Ag + -Na + ion exchange technology. By measuring the spectral bandwidths of 1260nm ~ 1360nm and 1460nm ~ 1600nm two-band broadband light source, the insertion loss of less than 4.0dB in the broadband is obtained. The spectral line is relatively flat with less wavelength dependence and the uniformity is less than 0.5dB. The results show that this asymmetric X-junction combined with ion-exchange process can produce a broadband 2 × 2 3dB coupler on glass substrate, which lays the foundation for further optimization of device performance and successful development of device with application value.