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All-fiber single-frequency DFB laser
All-fiber single-frequency DFB laser Optical path design The central wavelength of a conventional DFB fiber laser is 1550.16nm, and the side-to-side rejection ratio is greater than 40dB. Given that the 20dB linewidth of a DFB fiber laser is 69.8kHz, it can be known that its 3dB linewidth i...Read More -
Basic parameters of the laser system
Basic parameters of the laser system In numerous application fields such as material processing, laser surgery and remote sensing, although there are many types of laser systems, they often share some common core parameters. Establishing a unified parameter terminology system can help avoid confu...Read More -
What is a Si photodetector
What is a Si photodetector With the rapid development of modern technology, photodetectors, as an important sensor device, have gradually come into people’s view. Especially Si photodetector (silicon photodetector), with their superior performance and broad application prospects, hav...Read More -
New Research on Low-dimensional Avalanche Photodetector
New Research on Low-dimensional Avalanche Photodetector High-sensitivity detection of few-photon or even single-photon technologies holds significant application prospects in fields such as low-light imaging, remote sensing and telemetry, as well as quantum communication. Among them, avalanche ph...Read More -
The technology and development trends of attosecond lasers in China
The technology and development trends of attosecond lasers in China The Institute of Physics, Chinese Academy of Sciences, reported the measurement results of 160 as isolated attosecond pulses in 2013. The isolated attosecond pulses (IAPs) of this research team were generated based on high-order ...Read More -
Introduce InGaAs photodetector
Introduce InGaAs photodetector InGaAs is one of the ideal materials for achieving high-response and high-speed photodetector. Firstly, InGaAs is a direct bandgap semiconductor material, and its bandgap width can be regulated by the ratio between In and Ga, enabling the detection of optical...Read More -
The indicators of the Mach-Zehnder modulator
The indicators of the Mach-Zehnder modulator The Mach-Zehnder Modulator (abbreviated as MZM modulator) is a key device used to achieve optical signal modulation in the field of optical communication. It is an important component of Electro-Optic Modulator, and its performance indicators directly ...Read More -
Introduction to fiber optic delay line
Introduction to fiber optic delay line The fiber optic delay line is a device that delays signals by utilizing the principle that optical signals propagate in optical fibers. It is composed of basic structures such as optical fibers, EO modulators and controllers. Optical fiber, as a transmission...Read More -
The types of tunable laser
The types of tunable laser The application of tunable lasers can generally be divided into two major categories: one is when single-line or multi-line fixed-wavelength lasers cannot provide the required one or more discrete wavelengths; Another category involves situations where the laser ...Read More -
Test methods for the performance of electro-optic modulator
Test methods for the performance of electro-optic modulator 1. Half-wave voltage test steps for electro-optic intensity modulator Taking the half-wave voltage at the RF terminal as an example, the signal source, the device under test and the oscilloscope are connected through a three-way d...Read More -
New Research on narrow-linewidth laser
New Research on narrow-linewidth laser Narrow-linewidth laser are crucial in a wide range of applications such as precision sensing, spectroscopy, and quantum science. In addition to spectral width, spectral shape is also an important factor, which depends on the application scenario. For ...Read More -
How to use the EO modulator
How to use the EO modulator After receiving the EO modulator and opening the package, please wear electrostatic gloves/wristbands when touching the metal tube shell part of the device. Use tweezers to remove the optical input/output ports of the device from the grooves of the box, and then remove...Read More
