An unbalanced Mach-Zehnder interferometer made using dissimilar-fibre fused taper couplers is proposed for filtering applications. The all-fibre device is compact, rugged, simple to make and provides extended control and flexibility for the design of various types of filters.

dx.doi.org/10.1049/el:19890945
Electronics Letters
Department of Electronics

Albert, J, Malo, B., Bilodeau, F., Hill, K.O., & Johnson, D.C. (1989). Unbalanced dissimilar-fibre Mach-Zehnder interferometer: application as filter. Electronics Letters. doi:10.1049/el:19890945