Now showing items 1-10 of 12
Dynamic Characterization of Optically Controlled Semiconductor Devices
Optical control of semiconductor devices is a new area, which can be used in several applications. The dynamic behavior of these devices is a crucial problem. Reliable method for its characterization is highly needed. The ...
Harmonic Components and Dispersion of Mobile Network Signals due to Fiber-Optical Transmission
Several system applications require optical transmission of very high bit-rate digital as well as microwave and millimeter-wave carrier signals. Without completeness, a few recent applications are mentioned such as: 5G ...
Microwave Characterization of High-Speed pin Photodiodes
Optical responsivity and electrical reflection of an ultra high-speed pin photodiode (PD) are measured in 20 GHz frequency range. The effect of PD bias voltage variation was investigated at different incident optical power ...
Broadband Low Noise Optical Receiver Utilizing Distributed Amplification
A new approach for the design and construction of low noise broadband optical receivers is presented utilizing distributed amplification based on hybrid integrated technology. Using extremely low noise PHEMTs as well as ...
The effect of parasitic inductances in distributed amplifiers
The gain-bandwidth relations of distributed amplifiers (DA) are analyzed. It is shown that the amplifier performance is uniquely related to the properties of the active elements and the electrical length of the transmission ...
Improved Optical-Microwave Mixing Process Utilizing High-Speed Photo-diodes
Mixing of lightwaves and microwaves offers new perspectives for the reception of subcarrier multiplexed (SCM) optical signals, Berceli (1). The received signal can be selected more easily and thus the receiver is significantly ...
New optomixer surpassing photodetection at microwaves
The properties of a new optomixing method are investigated and compared to the performance of the photodetection. This new method offers significantly higher output signal level compared to the direct photodetection.
Eight-Octave Bandwidth Optical Receiver Using Distributed Amplification
A new approach us presented utilizing low-noise distributed amplification based on a hybrid integration technology, This way eight-octave bandwidth has been achieved with a responsivity characteristics flat from 40 MHz up ...
Optical Processing and Transmission of Subcarrier Multiplexed Microwave Signals
The subcarrier transmission of microwave signals is a perspective method for the optical fiber links. Several approaches are presented covering the generation and reception of the subcarrier optical signals. The transmission ...
Optical Generation of Millimeter Waves for Mobile Radio Systems
A new approach is presented for the optical generation of millimetre waves with the intention to feed the base stations of mobile radio systems. In this approach an optically transmitted subharmonic reference signal is ...