Single mode single window broadband coupler, was used bandwidth expand -ing techinics (none-symmetry techinics), so that we can change the feature or wavelength of the product, then make its bandwidth at 1310nm or 1550nm communication window could be expanded to ±40nm, therefore it can not only satisfy the requirement of precision in the range of bandwidth, but satisfy the requirement of low excess loss and low polarization dependent loss as well.
1.Low excess loss
2.Excellent transfer directivity
3.Low polarization dependent loss
1.Fiber optic communication system
2.Fiber optic access network
3.Fiber optic CATV
4.Fiber optic instrumentation