Title :
A dual wavelength (1.32-1.56 mu m) directional coupler demultiplexer by ion exchange in glass
Author :
Cheng, Hsing C. ; Ramaswamy, Ramu V.
Author_Institution :
Dept. of Electr. Eng., Florida Univ., Gainesville, FL, USA
Abstract :
A 1.32-1.56-μ m demultiplexer using a symmetrical directional coupler consisting of Ag/sup +/-Na/sup +/ exchanged channel waveguides in BK7 glass with a total insertion loss of 1.25 dB for a 14.5-mm-long device and a propagation loss of 0.15 dB/cm is demonstrated. The crosstalk at 1.315 and 1.561 mu m and the cross power ratio at 1.315 mu m were measured to be less than -40 dB for the TE mode.
Keywords :
directional couplers; ion exchange; multiplexing; optical couplers; optical losses; optical waveguides; 0.15 dB; 1.25 dB; 1.315 micron; 1.32 micron; 1.56 micron; 1.561 micron; 14.5 nm; Ag/sup +/-Na/sup +/; Ag/sup +/-Na/sup +/ exchanged channel waveguides; BK7 glass; TE mode; cross power ratio; crosstalk; directional coupler demultiplexer; dual wavelength; insertion loss; ion exchange; propagation loss; Crosstalk; Directional couplers; Glass; Insertion loss; Optical fiber communication; Optical waveguides; Power measurement; Propagation losses; Wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
