An optical delay line is a device that can change the optical path, and it has a wide range of applications in optical detection fields such as terahertz time-domain spectroscopy (THz-TDS), optical coherence tomography (OCT), and ultrafast time-resolution spectroscopy. Photoconductive Antenna Detection Principle In a typical terahertz time-domain spectroscopy system based on a photoconductive antenna, the…
There are three common photoelectric conversions (conversion of absorbed photons into charges) mechanisms in photodetectors, which are the photoconductive effect (PCE), photovoltaic effect (PVE), and photo thermoelectric effect (PTE). Fig. 1 (a) Schematic diagram of the structure of 2D photodetector based on SiO2/Si substrate. (b) Schematic diagram of the photoconductive effect: in a dark field and…
This tutorial focuses on reverse-biased p-n junctions that are commonly used for making optical receivers. Metal-semiconductor-metal (MSM) photodetectors are also discussed briefly. 1. P-N PHOTODIODES A reverse-biased p-n junction consists of a region, known as the depletion region, that is essentially devoid of free charge carriers and where a large built-in electric field opposes the flow of…
Photodiodes and phototransistors are often confused with each other because of their similar operation. Both are semiconductor-based components that sense light intensity and convert it into an electrical signal, but they differ. What is the difference between a photodiode and a phototransistor? Before diving into the differences between photodiodes and phototransistors, we need to understand…
NY15D series laser module is a directly modulated DFB laser that provides exceptional performance for linear fiber optics communications in very wide bandwidth applications. NY15D’s linear fiber optic lasers are an excellent alternative to using coaxial cable systems to transmit 12 GHz or 18 GHz signals. They offer significant improvements in the reliability of microwave communications networks by transmitting the RF signal…
NY13D series laser module is a directly modulated DFB laser that provides exceptional performance for linear fiber optics communications in very wide bandwidth applications. NY13D’s linear fiber optic lasers are an excellent alternative to using coaxial cable systems to transmit 12 GHz or 18 GHz signals. They offer significant improvements in the reliability of microwave communications networks by transmitting the RF signal…
NYCMD series module is a directly modulated DFB laser that provides exceptional performance for linear fiber optics communications in very wide bandwidth applications. NYCMD’s linear fiber optic lasers are an excellent alternative to using coaxial cable systems to transmit 12 GHz or 18 GHz signals. NYCMD lasers offer significant improvements in the reliability of microwave…
NY55D series laser component is characterized for use as a wavelength selected, high-power optical source in combination with an external modulator in CATV and DWDM networks, especially for super trunking and distribution. Selected wavelengths comply with ITU Grid recommendations, both in range and in channel definition. NY55D series is equipped with polarization maintaining (PM) fiber and DC-coupled with a built-in TEC, thermistor, and monitor photodiode. The device is…
DS-HES series aircraft radio altimeter is a photoelectric delay system that was specially developed for various radio altimeter simulators’ productions, measurements, and maintains. The systems depend on the technology of the fiber-optic delay line, using fiber-optic lines as the carrier, and the feature of light delay to simulate RF microwave signals’ space transmission distance. In…
Get Free Quote
This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.
Strictly Necessary Cookie should be enabled at all times so that we can save your preferences for cookie settings.
If you disable this cookie, we will not be able to save your preferences. This means that every time you visit this website you will need to enable or disable cookies again.
