【摘要】 本文报道了以高质量的ＢＫ７光学玻璃为衬底，通过稀释Ａｇ＋－Ｎａ＋离子交换技术，制备出低损耗的表面条波导，并用近场法测量出条波导的模场分布曲线．给出光纤与波导耦合的失配损耗为０．５４ｄＢ，条波导传输损耗为０．２１ｄＢ／ｃｍ．以及在此工作基础上，成功地研制了适用于大容量相于光通信系统的１×２和１×４单模波导分束器．更多还原

【Abstract】 Low loss surface strip wave guide fabricated by Ag+-Na+ ion exchange technology on highqualityf BK7 glass is reported in this paper.The mode field distributed curves of strip waveguide were measured by near-field method.It is shown that dismatch loss of coupling between fibre and waveguide is 0.54 dB,the transmission loss of the waveguide is O.21 dB/cm. And 1×2 and 1×4 single mode waveguide splitter used for large capacity coherent optical communication were produced.更多还原