Multiwavelength optical networks using wavelength selective components are recognized as an attractive technology option for building a flexible optical network layer [1], It is becoming clear that such network architectures may cause degradation of the optical signal due to the combined effects of the multiplexer and demultiplexer concatenation together with the misalignment of the (de)multiplexers and the laser source optical frequency [2,3].

© 1996 Optical Society of America

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