The figure below shows a symmetrical slab waveguide. 1n2n2nCoreLower claddingUpper cladding01.5 mλμ=xza2ax=2ax= −0x=The electric field of the fundamental mode of this waveguide has an electric is given as 14.3701.91514.3720ˆcos(1.064)for 2( , )ˆ0.485for 2jzyaxjzyaa Ex exE x zaaE eex−⎛⎞−−⎜⎟−⎝⎠⎧≤⎪⎪=⎨⎪≥⎪⎩G, where xand zhave units of micro meters. (a)(2%) What is the classification of this mode?
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