Results 211 to 220 of about 140,939 (365)

Ultra‐Compact Broadband Spot Size Converter Using Metamaterial Cell‐Based Inverse Design

open access: yesLaser &Photonics Reviews, EarlyView.
Inverse design techniques are combined with subwavelength structures to design a compact, high‐performance spot size converter. A cell‐based topology is proposed, where each cell is composed of an equivalent homogenous metamaterial, resulting in a reduced parameter that speeds up optimization. A 7 μm$\mu{\rm m}$‐long device that achieves a 24‐fold beam
Alejandro Sánchez‐Sánchez   +6 more
wiley   +1 more source

Identity‐Enabled CDMA LiDAR for Massively Parallel Ranging with a Single‐Element Receiver

open access: yesLaser &Photonics Reviews, EarlyView.
A novel LiDAR system integrates CDMA modulation with a single‐element detector to achieve massive channel parallel 3D imaging. By using a user identification code and a correlation‐based feedback loop, it overcomes signal collisions and the near‐far problem.
Yixiu Shen, Zi Heng Lim, Guangya Zhou
wiley   +1 more source

High‐Precision Automated Setting of Arbitrary Magnitude and Phase of Mach–Zehnder Interferometers for Scalable Optical Computing

open access: yesLaser &Photonics Reviews, EarlyView.
This work presents a novel technique to control photonic accelerators based on integrated Mach–Zehnder interferometers, enabling resolutions of 7.01 and 8.04 bits for the output power and phase setting. The technique uses local feedback loops that ensure precise calibration‐free programming of the device transfer function, enabling highly accurate ...
Alessandro di Tria   +7 more
wiley   +1 more source

Cylindrical Vector Beam Multiplexing based on All‐Dielectric Fiber Meta‐Tips Enabling High‐Capacity Bidirectional Optical Communication

open access: yesLaser &Photonics Reviews, EarlyView.
Cylindrical vector beam (CVB) multiplexing offers a viable solution to channel capacity, integration, and unidirectional transmission challenges in fiber‐rich sixth‐generation backbone networks. An all‐dielectric fiber meta‐tip‐enabled CVB multiplexing system is proposed and demonstrated, providing high‐capacity, bidirectional optical interconnects and
Jinke Li   +3 more
wiley   +1 more source

A MHz−Level Swept Source by Time Stretching the Shot−Noise Limited Supercontinuum Based on a Mode−Locked Laser and the Application in Optical Coherence Tomography

open access: yesLaser &Photonics Reviews, EarlyView.
This work pioneers a 5.7 MHz all−fiber mode−locked laser−based broadband swept−source OCT system, achieving record−breaking performance: 11.4 µm axial resolution and 119 mm detection range. The system demonstrates exceptional coherence and stability, overcoming traditional trade−off between imaging speed and detection range.
Laiyang Dang   +7 more
wiley   +1 more source

Home - About - Disclaimer - Privacy