Hybrid transversal-lattice optical filters

Area of Science:

• Photonics and Optical Engineering
• Integrated Optics

Background:

• Traditional optical filters have limitations in synthesizing complex periodic transfer functions.
• Planar lightwave circuits offer a platform for miniaturized and integrated optical devices.

Purpose of the Study:

• Introduce a new general class of hybrid optical filters.
• Demonstrate their suitability for planar lightwave circuit implementation.
• Showcase the synthesis of arbitrary periodic transfer functions.

Main Methods:

• Development of a novel hybrid optical filter architecture.
• Analysis of filter behavior in specific limits (transversal, lattice).
• Exploration of design tradeoffs for insertion loss and layout optimization.

Main Results:

• The proposed hybrid filters can realize arbitrary periodic transfer functions with finite impulse responses.
• Design flexibility allows for minimization of insertion loss.
• Optimization of planar layout is achievable.

Conclusions:

• The new class of hybrid optical filters is a versatile tool for integrated photonic applications.
• These filters offer a pathway to advanced optical signal processing functionalities on a chip.
• The presented design methodology facilitates practical implementation and performance tuning.