The performances of the fabricated OSDL chips were investigated and compared comprehensively, including the power consumption, switching time and fiber to fiber insertion loss.
A tunable optical delay line (ODL) featuring high switching speed and low optical loss is highly desirable in many fields. Here, based on the thin-film
Optical interferometry has emerged as a cornerstone technology for high-precision length measurement, offering unparalleled accuracy in various scientific and industrial applications.
This system achieved high-precision measurements with an error of ±0.15% in the 0.2∼1 m range, demonstrating the potential of diode lasers for their high sensitivity and power, while the
Wei-Qian Zhao, Zi-Fu Su, Ya-Fei Yu, and Jin-Dong Wang Abstract—In fiber optic sensing, time delays induced by polar-ization mode dispersion can distort signals in systems relying on phase or intensity
In fiber optic sensing, time delays induced by polarization mode dispersion can distort signals in systems relying on phase or intensity variations for measurement, degrading performance,
When to Use High-Speed Comparators or ADCs for Distance Measurements in Optical Time-of-Flight Systems ABSTRACT This document details how optical Time-of-Flight (ToF) measurements are
We propose a high-precision optical time delay measurement method based on carrier-suppressed optical double-sideband (ODSB) modulation, which features high accuracy and stability. In the
A high precision time delay calibration system based on optical fiber switches and fiber coils network for the satellite range measurement system is proposed in this paper.
To address this challenge, we propose a weak measurement-based scheme using intensity contrast ratio for high-precision, high-sensitivity fiber-optic time delay estimation under large
Abstract We propose and experimentally demonstrate an approach for high-precision optical transfer delay measurement based on phase-derived
Given its long-range capabilities, structural simplicity, and robustness to device imperfections , our scheme holds significant potential for practical applications in high-precision fiber-optic sensing and
The high-performance modulator is realized by seamless integration of a high-contrast waveguide based on lithium niobate—a popular modulator material—with compact, low-loss silicon
In order to fully understand the optical true delay technology, this article first elaborates on the principle of phased array antennas and the reasons for beam squint, and analyzes the impact of
One of the possible advantages of that approach is that very much longer time delays can be realized, since optical fibers provide low propagation losses and can be strongly curved to form compact coils.
Although there are researches on on-chip optical delay line and free-space-type delay line using mirrors is quite common in proof-of-principle
Combined with thermo-optic switch or attenuator, passive delay lines are able to achieve the functions of digital delay lines or microwave filters etc. Low loss and precise group delay are two straightforward
We report a design of 55 cm long spiral delay line at 850 nm wavelength. Propagation characteristics were simulated and analysed with a fully vectorial EigenMode Expansion (EME)
Optical delay line (ODL) featuring low power consumption and low loss are very demanding for various applications such as optical communications, optical coherence tomography, and microwave
Superconducting nanowire single photon detectors (SNSPDs) have attracted considerable attention in the field of free-space optical communications, especially for ultra-long
In microwave photonics, phased arrays based on high-precision optical true-time delay lines can better suppress the beam-squint effect for large-bandwidth signals [5,6].
This paper proposes a linear interpolation compensation reference path scheme to suppress laser relative intensity noise and reduce the noise floor in the 3 × 3 interferometric system,
This paper provides a new quantitative analysis method for performance calculation and improvement of the optical fiber delay line.
This document details how optical Time-of-Flight (ToF) measurements are made with ADCs and discrete comparators and when to use a comparator in a Time-of-Flight system.
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