The
Single-mode Wavelength Independent (Dual-window
Broadband) Couplers employ Bandwidth-extending Technique
(Asymmetrical Technique) to extend bandwidth up to ?40nm
at 1310/1550nm channels by changing wavelength
characteristics, so as to meet the coupling accuracy in
two wavebands. Single-mode Dual-windows Broadband
Couplers ensure the low Excess loss and PDL, have been
widely used for test instruments, broadband light
sources, bandwidth optical fiber
networks. |