Contents
1.2 Filter Applications in WDM Systems
1.2.1 Bandpass Filters for Multiplexing, Demultiplexing, and Add/Drop
1.2.2 Gain Equalization Filters
1.2.3 Dispersion Compensation Filters
2 Fundamentals of Electromagnetic Waves and Waveguides
2.1.2 The Wave Equation in a Dielectric Medium
2.1.3 Solutions of the Wave Equation
2.1.4 Phase Velocity and Group Velocity
2.1.5 Reflection and Refraction at Dielectric Interfaces
2.2.1 The Guided Wave Condition
2.2.2 Characteristic Equations for the Slab Waveguide
2.2.4 Orthogonality and Completeness of Modes
2.2.6 Loss and Signal Attenuation
2.3.2 The Effective Index Method
2.3.3 Perturbation Corrections
2.4.3 Multi-Mode Interference Couplers
2.5 Material Properties and Fabrication Processes
3 Digital Filter Concepts for Optical Filters
3.1 Linear Time-Invariant Systems
3.2.5 Group Delay and Dispersion
3.2.6 Minimurn-, Maximum-, and Linear-Phase Filters
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