会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明授权
    • Polymide optical waveguide structures
    • 聚酰亚胺光波导结构
    • US5649045A
    • 1997-07-15
    • US571448
    • 1995-12-13
    • Douglas E. FjareDavid A. Wargowski
    • Douglas E. FjareDavid A. Wargowski
    • G02B6/12C08G73/10G02B1/04G02B6/00G02B6/122
    • G02B6/1221G02B1/046G02B1/048
    • Polyimide optical waveguide structures comprising a core within a cladding wherein at least one of the core and the cladding is a polyimide containing 6FDA; and the complementary portion of the waveguide structure is a polyimide having partial replacement of the 6FDA of the core or cladding composition by BPDA, and wherein the difference in the birefringence of the core and cladding are less than the difference in the refractive index. Copolyimides containing 6FDA and BPDA moieties, and at least one diamine, which have properties useful in optical applications including adjustable refractive index and controllable birefringence, low optical losses, low optical absorbance, increased solvent resistance, and high thermal stability. A method for adjusting the refractive index to make useful copolyimide core/cladding waveguide structures by controlling the 6FDA/BPDA ratio.
    • 聚酰亚胺光波导结构包括在包层内的芯,其中芯和包层中的至少一个是含有6FDA的聚酰亚胺; 并且波导结构的互补部分是通过BPDA部分替代芯或包层组合物的6FDA的聚酰亚胺,并且其中芯和包层的双折射差小于折射率差。 含有6FDA和BPDA部分的共聚酰亚胺和至少一种具有可用于光学应用性质的二胺,包括可调折射率和可控双折射,低光损耗,低吸光度,增加的耐溶剂性和高热稳定性。 通过控制6FDA / BPDA比率来调节折射率以制备有用的共聚酰亚胺核/包层波导结构的方法。