Lecture%2015%20Optical%20Fibers%20Intro

Lecture%2015%20Optical%20Fibers%20Intro - Photonic Devices...

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Photonic Devices and Systems, Lecture 15 1/12 Optical Fibers Unless otherwise noted, figures in this lecture are from Iizuka, Elements of Photonics
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Photonic Devices and Systems, Lecture 15 2/12
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Photonic Devices and Systems, Lecture 15 3/12 Optical Fibers for Telecommunications From Iizuka, Elements of Photonics
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Photonic Devices and Systems, Lecture 15 4/12
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Photonic Devices and Systems, Lecture 15 5/12 Theory of Optical Modes in Step Index Fibers
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Photonic Devices and Systems, Lecture 15 6/12 1 2 inside the core inside the cladding n n n = ˆ ˆ ˆ ˆ ˆ ˆ rz EE rE E z HH rH H z φ =++ G G We find the modes by looking for solutions of: () 22 00 2 2 0 2 2 0 2 ˆ 2 ˆ ˆ 0 r rr r zz E E En kE E n r E E k E k E z φφ  ∇+ = +   +∇ + + + = GG The equations have a simple physical interpretation. (from Pollock)
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Photonic Devices and Systems, Lecture 15 7/12 Since the equations for E r and E φ are coupled, we first solve for E z . H z is a solution of the same Helmholtz equation and its solutions have the same form.
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Lecture%2015%20Optical%20Fibers%20Intro - Photonic Devices...

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