Optics and Photonics » Telecomm System

Found 12 technologies within Telecomm System RSS ATOM

As illustrated, the new UCF technology may be implemented using planar arrays such as an organic light-emitting diode array.

Imaging-Based Transmitter and Receiver for Free-Space Optical Communications

34131 – Key points: Researchers at the University of Central Florida have developed a robust and cost-effective solution for line-of-site control (LOS)—also known as beam steering—in emerging free-space optical communications (FOC) systems. Instead of using conventional radio frequencies, FOC systems employ optical domain carrier frequencies to establish direct LOS data links between... Read More

Photonic Platform for Polarization Diversity and Extremely Broad Bandwidths

33645 – New platform enables polarizers to span optical bandwidths of more than an octave in frequency (Note: figures referenced below can be found by clicking the Image Gallery, to the right.) UCF researchers have invented a breakthrough technology for creating optical systems that enable control of different polarizations over broader bandwidths than those of conventional systems. The... Read More

Figure 1. Example method of fabricating a device using the invention

New Technology Offers Thin-Film Integration Compatible with Silicon Photonics Foundry Production

33647 – Invention can dramatically improve the efficiency and reliability of analog integrated photonic systems for high-speed telecommunications in the 1.55 μm wavelength regime UCF researchers have invented a novel way to produce heterogeneous photonic integrated circuits using fabrication methods that are compatible with photonics foundry production. The new process enables manufacturers to... Read More

Block diagram of a system which can be used to perform the fabrication process according to some embodi ments disclosed herein

Pure Silicon Photonic Crystal Fiber Fabrication via Magnesiothermic Reduction for Operations in the Mid-IR Spectrum

31601 – The fabrication process for the production of microstructured silicon photonic crystal fiber by means of magnesiothermic reduction, converting an industrially mature technology into a completely novel device platform. Semiconductors have revolutionized the human condition by giving society the transistor and all its derivative computational technologies. The basic utility behind... Read More

Fig. 1. Block diagram of an embodiment of a system for optical carrier recovery

All-Optical Carrier Recovery

30930 – This invention presents the first all-optical phase and polarization recovery scheme for Phase-Shift Key signals. UCF scientists have developed the first all-optical carrier phase and polarization recovery scheme for Phase-Shift Key (PSK) signals. The technique also provides a means to carry out reliable optical carrier synchronization using a phase sensitive oscillator. Coherent optical... Read More

Schematic diagram showing an embodiment of the optical amplification to improve the performance

Wavelength Division Transmission for 1.31 μm and 1.55μm Bands Simultaneously

31137 – The design of a wavelength division multiplexed system for fully dispersion compensated operation in both 1.55μm and 1.31μm wavelength bands by use of constant-intensity modulation formats, semiconductor optical amplifiers, and selective compensation protocols. Fiber optic communications is the underpinning of the information revolution we enjoy today, and at the heart of this exciting... Read More

Schematic block diagram showing an example of an experimental setup for a binary phase-shift-keying transmitter/ phase diversity receiver

Chromatic Dispersion Compensation for Optical Communications

31078 – A method for infinite impulse response (IIR) chromatic dispersion compensation in optical communications systems that employ homodyne detection, by means of digital signal postprocessing. The advent of fiber optic communications has enabled a great deal of the connectivity we enjoy in our modern age. Fiber’s ability to carry information around the world at the speed of light has placed a... Read More

Block diagram of an experimental system that was used to test the feasibility of few-mode fibers in optical transmission

Nonlinearity-Tolerant Fiber for Greater Transmission Capacity in Optical Communications

32079 – A new alternative that combines the benefits of single-mode and multi-mode fibers, few-mode fiber can avoid problems associated with nonlinearity and with mode coupling. Though single-mode fiber offers advantages over multi-mode fiber in long distance optical communications, its performance is compromised by nonlinearity problems including self-phase modulation (SPM), cross-phase... Read More

A system model diagram of an optical communication system including an embodiment of SOA impairment compensation logic

Significantly Increased Electronic Compensation of Semiconductor Optical Amplifiers

31723 – In recent years, electrical dispersion compensation (EDC) and electrical nonlinearity compensation (ENLC) have received significant research activity as well as commercial interest. Specifically, EDC has the potential to decrease optical signal distortion in the electrical domain after detection in a photoreceiver. Optical channel impairments, caused by semiconductor optical amplifiers (SOA),... Read More

$Cross-section of a universal fiber. The blue circles are either air or a material with a different refractive index than the rest of the fiber$

Waveguides Simultaneously Transmit Short and Long Electromagnetic Waves

32336 – Often used to transmit electromagnetic (EM) signals, optical fibers sometimes transmit signals of varying wavelengths, e.g. signals from opposite ends of the EM spectrum, from microwaves to infrared (IR). Due to the fibers’ geometry, these transmissions typically require multiple fibers, where each fiber is configured to guide waves within a limited wavelength range. This large number of... Read More

A graph that plots the power evolution of signals transmitted during the simulation

Amplify Space-Multiplexed Optical Signals

32539 – In efforts to keep up with higher and higher bandwidth demand, multiplexing techniques offer promising ways to increase the capacity of current fiber infrastructure, including space-multiplexed optical transmission. While multimode and multicore fibers can multiply fiber capacity, space-multiplexed optical transmission remains limited to several tens of kilometers without a practical... Read More

Simplified Processing for Space-Multiplexed Optical Signals

32540 – Optical communication systems using multi-core fibers enable the high-bandwidth advantages of space-multiplexed systems. However, the lack of a practical photonic signal processing technique has limited its use. Most current optical signal processing components designed for an on-axis incoming beam can’t be applied to a multi-core fiber because the beams from a multi-core fiber are both... Read More