Optical Carrier transmission rates

About: Optical Carrier transmission rates is a research topic. Over the lifetime, 2463 publications have been published within this topic receiving 33293 citations.

GByte-class skewless parallel-optical-data-link subsystem

Abstract: This paper describes 48 x 100 Mbit/s data link subsystem using a 6 x 1.1 Gbit/s arrayed optical transceiver module and 15-ns deskew function ICs. This link will be applied to the real world computing (RWC)-1, which is one of the massively parallel computer with 1,000-class processor elements.

Optical networks using multi-spatial mode media

Abstract: A fiber optic system includes a transmitter for transmitting high-speed streaming electrical data to a receiver for receiving the high-speed data. In order to transmit multiple channels in the system at high-speeds, an electrical data signal is converted into multiple optical sub-signals. Each of the multiple optical sub-signals are transmitted at the common wavelength on multi-spatial mode media. The receiver receives the multiple optical sub-signals as a multi-spatial mode optical signal and separates the multi-spatial mode optical signal into branch signals having a common wavelength. The receiver mixes each of the branch signals with optical carrier waves having the common wavelength and converts the branch signals into electrical signals. Digital signal processing is used to recover the data sub-signals which are used to recover the original data signal.

Optical techniques for sparse-aperture, millimeter-wave imaging

Abstract: To obtain high-angular-resolution (< 1 milliradian) passive millimeter-wave images using traditional imaging techniques requires prohibitively large apertures for most applications. Sparse aperture techniques present a viable alternative by providing large effective aperture without the corresponding cubic increase in imager volume and weight. However, implementing a large field-of-view, high-resolution, sparse-aperture imager presents a number of challenges, namely: (1) the fabrication of a large number of phase-sensitive, ultra-low-noise millimeter-wave detectors, (2) routing and (3) realtime correlation of acquired data across the array, and (4) implementation of true time delays for steering the field-of-view without pronounced fringe-washing effects. In previous work, we have presented optical upconversion techniques as a viable alternative for overcoming these challenges. Converting passive millimeter-wave energy collected at each point in the array into sidebands on a common optical carrier signal allows for (1) recording of broadband complex field values onto the optical carrier, (2) efficient routing of these field values via fiber optics, (3) correlation of the recorded data via optical filtering and simple optics, and (4) implementation of true time delays using fiber optic or integrated optical switches. Herein, we present continued theoretical and experimental progress toward the realization of such optically based sparse arrays for passive millimeter-wave imaging applications.

Simultaneous single-fibre transmission of video and bidirectional voice/data using LiNbO/sub 3/ guided-wave devices

Abstract: A system experiment which uses integrated optics to effect bidirectional transmission on a single-mode fiber is described. The system has practical applications and provides more functionality than previously reported experimental systems. The system consists of a video link (180 Mbit/s) and a voice/data link (1.54 Mbit/s) to the end user and a return voice/data link (1.54 Mbit/s) from the end user. Two LiNbO/sub 3/ devices are used to externally modulate lasers and a third is used in a novel way to demultiplex the incoming signals and to eliminate the need for an optical source at the user's end. The system operated over 4 km of standard single-mode fiber with a BER >

Mode-locked laser light source and multicarrier light source employing it

Abstract: A mode-locked laser serves as a light source for stabilizing the frequency of each optical carrier and generates high-quality optical multi-carrier. The mode-locked laser is equipped with a master laser for generating master laser light; a mode-locked laser section including in an optical resonator at least a modulating section, am amplifying section, and a bandwidth limiting section for reducing mode partition noise; and a signal generating section for generating a periodic signal that serves for mode locking of the mode-locked laser section and is to be applied to the modulating section. The master laser light is input to the optical resonator of the mode-locked laser section to cause injection locking. An optical multi-carrier source is constructed by combining this mode-locked laser with a waveguided optical nonlinear medium.