A low-loss 1 × 256 optical power splitter is designed and fabricated using silica-based planar lightwave circuit technology on a 6-in. quartz substrate. The measured results show that the insertion loss, uniformity, and wavelength-dependence loss (WDL) of a 1 × 256 splitter are <26.2, 1.97, and 1.83 dB, respectively, in the wavelength range from 1.26 to 1.63 μm. The insertion loss, uniformity, and WDL of a 1 × 256 splitter are <25.62, 1.33, and 1.03 dB, respectively, in the normal communication wavelength range from 1.31 to 1.55μm. The polarization dependence loss is <0.16 dB in the wavelengths of 1.31 and 1.55 μm.

中文翻译：

---

低损耗1×256光功率分配器

低损耗 1 × 256 光功率分配器是使用基于二氧化硅的平面光波电路技术在 6 英寸上设计和制造的。石英基板。测量结果表明，1 × 256 分路器的插入损耗、均匀性和波长相关损耗 (WDL) 在 1.26 至 1.63 μm 的波长范围内分别<26.2、1.97 和 1.83 dB。1×256分路器的插入损耗、均匀度和WDL在1.31~1.55μm的正常通信波长范围内分别<25.62、1.33和1.03 dB。在 1.31 和 1.55 μm 的波长下，偏振相关损耗 <0.16 dB。