Yan Zhong

Date of Award


Degree Name

Master of Arts



First Advisor

Dr. Arthur McGurn

Second Advisor

Dr. M. Soga

Third Advisor

Dr. Kapenga

Access Setting

Masters Thesis-Open Access


The concepts of band theory for electrons can also be employed to describe the behavior of electromagnetic waves propagating in periodic dielectric structures. These periodic structures can produce photonic band gaps in which the propagation of electromagnetic waves is strictly prohibited. The introduction of impurities in such system gives rise to donor and acceptor gap modes in electron system and to energy gap modes in photonic system.

In my thesis, the impurity modes in one-dimensional, periodic, dielectric system will be studied. These modes are introduced in the 1-d dielectric structure by altering the thickness of one slab in an otherwise periodic array. Narrow resonant modes are then found in the forbidden gaps. We study these modes as function of impurity slab thickness and dielectric constant. The calculations presented in this thesis are based on numerically studying the transmittance of impurity modes through one-dimensional, periodic arrays of dielectric slabs.

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