Two Wave Multi/Demultiplexer on the Base οf Gradient Index Multimode Interference Structures Made by Ag+-Na+ Ion Exchange
M. Błahut and K. Bazan
Department of Optoelectronics, Silesian University of Technology, Krzywoustego 2, 44-100 Gliwice, Poland
Full Text PDF
The paper presents optimizing investigations by the beam propagation method method of two wave multi/demultiplexer which uses gradient index multimode interference structures made by Ag+-Na+ ion exchange in BK-7 glass. We have discussed the influence of the structure geometry and technological process parameters for selected wavelength combinations within the range of 635÷ 850 nm. We have described operating parameters of the multiplexers - excess losses and contrasts. We have also presented the way of finding approximate MMI section widths and lengths which satisfy the multiplexing condition.
DOI: 10.12693/APhysPolA.116.264
PACS numbers: 42.79.Sz, 42.82.Et