Temperature sensitivity of passive holographic wavelength-division multiplexers-demultiplexers

We derive a set of concise formulas to characterize the temperature sensiti vity of holographic wavelength-division multiplexers-demultiplexers (H-MUX' s-H-DMUX's). The normalized parameters such as dispersion abilities, centra l wavelength shift rate, and variations of insertion loss hold for general grating-based wavelength-division multiplexing-demultiplexing (WDM-WDDM) st ructures. The results are applicable to both wide-WDM-WDDM and dense ones w orking in 800-, 1300-, and 1550-nm optical wavelength windows, regardless o f whether their input-output ports are single-mode or multimode fibers. Det ailed analysis and experiments are carried out on a fully packaged four-cha nnel H-MUX-H-DMUX. The experimental results at temperatures from 25 to 80 d egrees C fit nicely with the theoretical prediction. We conclude that passi ve grating-based H-MUC's-H-DMUX's are promising for meeting the requirement s on temperature sensitivity in optical data communications and telecommuni cations Most of the analysis can be applied to other types of Bragg-grating -based WDM-WDDM. (C) 2000 Optical Society of America OCIS codes: 060.4230, 060.0060, 050.7330, 060.1810, 050.0050.