Optical Systems Overview

Principles

Definition

Optical systems is a field of academic inquiry and engineering concerned with the design, analysis, and characterization of configurations of optical components that interact with light. This domain investigates the principles governing the propagation, manipulation, and detection of electromagnetic radiation in the optical spectrum, focusing on the performance of assemblies such as lenses, mirrors, prisms, and diffractive elements. Its significance is fundamental to the development of technologies across diverse fields, including imaging, telecommunications, sensing, and manufacturing.

Ontological type

Core Principles

Design Methodologies

Performance Metrics

Key developments

Key Figures

Matrix and Nanoscale Metrology era

J. P. Woerdman [1] is associated with Leiden University [3] and Université Libre de Bruxelles [4] during this era. His key contribution is Orbital angular momentum of light and the transformation of Laguerre-Gaussian laser modes [6], which introduced a formal framework for spatial-mode control that underpinned later nanoscale metrology and multilayer analyses. H. Kogelnik [2] was associated with SUNY Polytechnic Institute [5] during this era. His key contribution is Coupled Wave Theory for Thick Hologram Gratings [7], which advanced thick-hologram grating theory and enabled more reliable design of volume holography and layered optics in matrix-based formalisms.

Transformation and Structured Light era

Mordechai Segev [1], associated with Princeton University [3] and Pennsylvania State University [4] during this era, is a leading figure in optical physics. His key contributions this era include the paper Observation of parity–time symmetry in optics [7], which demonstrated parity–time symmetry in photonics and spurred renewed interest in structured-light and engineered wavefront control. Demetrios N. Christodoulides [2], affiliated with University of Arizona [5] and Florida College [6] during this period, is another central figure in optical transformations. As a co-author of the paper Observation of parity–time symmetry in optics [7], he helped anchor PT-symmetric photonics and transformation-optics concepts, driving research into structured-light modalities and practical devices shaped by engineered wavefront control.

Integrated Photonic Metasurfaces era

Federico Capasso of Harvard, a pioneer of metasurface-based flat optics, helped establish achromatic metasurfaces and phase-discontinuous devices that underpin integrated photonic metasurfaces in the 2017–2024 period. Xiang Zhang’s group extended metasurface concepts toward scalable, large-area nanophotonic implementations and facilitated their translation toward chip-compatible architectures. Michal Lipson and collaborators propelled CMOS-compatible silicon photonics and on-chip phase shifters, delivering the scalable, low-loss phase control that enables on-chip beam steering and multifunctional metasurface-enabled imaging. Andrea Alù’s theoretical framework for Huygens and bianisotropic metasurfaces provided rigorous design principles for polarization control and multi-functional wavefront manipulation on integrated platforms, shaping the era’s direction.