Ion-exchanged glass waveguide Mach-Zehnder interferometers for wavelength multi/demultiplexing and the effect of thermal post-annealing on spectral transmission

Guangwen Zhang, Seppo Honkanen, Iraj Najafi, Ari Tervonen, Pekka Katila

Research output: Contribution to journalArticleScientificpeer-review


A non-symmetric three-port integrated optical Mach-Zehnder interferometer configuration is employed to make 1.3/1.55 mu m and 1.48/1.55 mu m wavelength multiplexers/demultiplexers. The devices are produced by a potassium-silver double-ion exchange process. The effect of thermal post-annealing on the spectral behaviour of the fabricated devices is investigated. It is observed that the spectral transmission of the 1.3/1.55 mu m device is not sensitive to post-annealing while the transmission spectrum of the 1.48/1.55 mu m device changes after post-annealing. The losses and extinction ratios of the fabricated devices are also determined.
Original languageEnglish
Pages (from-to)907-913
Number of pages7
JournalJournal of the European Optical Society: Rapid Publications
Publication statusPublished - 1994
MoE publication typeA1 Journal article-refereed


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