Search Results for: 2023

The direct modulated lasers (DML lasers) have always been the major component of the optical communication system, which is of short-reach, especially for those that are data centers and intra-board optical interconnects. They are seen as a cost-effective and easy structure, generally favored over the expensive structure of externally modulated lasers (EML lasers). Nevertheless, the frequency of the…

Rapidly increasing global navigation safety requirements and continuous usage of airplanes are requiring the procurement of radio altimeter test and simulation equipment, which are now priority items for airlines, MRO organizations, and aircraft manufacturers. The aircraft radio altimeter is a very important sensor, as it is the sensor whose data decides whether a plane will land safely or…

Modern photonic systems rely on laser sources that must provide both optical power and maintain stable wavelengths with high spectral purity and sustained operational reliability. The technology finds its greatest applications in dense wavelength division multiplexing (DWDM) systems as well as fiber-optic sensing and precision measurement systems. The DFB laser has emerged as the leading…

Why Ground Testing Has Become a Global Priority Radio altimeter ground testing has become more common in the aviation sector due to the exponential increase in demand over the last couple of years. This demand was due to regulatory changes, concerns over interference, and concerns over the ageing avionics. What was once considered an aspect of…

A photodetector is the first device that changes light into electric signals, thus interfacing light systems with electric ones, which is quite important in all optical systems. In more advanced forms of photodetectors, we now implement them into scientific devices, imaging systems, industrial fibers, and especially in photonics devices. One of the characteristics that photodetectors emphasize is…

This emphasis on improved performance in contemporary electronic warfare and radar—based on ultra-high resolution, greater instantaneous bandwidth, and superior anti-jamming capability—makes traditional delay technologies unsuitable. Standard systems, such as coaxial or surface acoustic wave (SAW) delay lines, are not good enough to fulfill the needs of the high-fidelity systems of today. Such a requirement has…

The advancement of modern day data communications has largely relied on the effective and dependable methods of transferring data over greater distances. Key to this mechanism remains the optical transceiver, which is a sleek and portable optical transceiver. It performs the essential work of changing electric signals to optical signals and transmitting the signals back…

As the development of optical communication technology continues, optical transmitters are now part of the vital components of the modern communication system. From high-speed connections in data centers to precise signal transmission in medical devices, optical transmitters are involved. So, what are the main elements of an optical transmitter? In this article, we will introduce…

Photodetectors, as essential sensing elements capable of converting light energy into electrical energy, are widely used in numerous fields such as communication, sensing, imaging, medical diagnostics, environmental monitoring, and fundamental scientific research. In many application scenarios, the light signals to be measured are often extremely weak, such as attenuated signals in long-distance optical fiber communication,…