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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.


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Proceedings ArticleDOI
17 Mar 2001
TL;DR: In this article, the authors demonstrate for the first time baseband optical carrier-sense multiple access with collision avoidance, and evaluate the performance of the baseband carrier sense circuit with bit-and packet-error-rate measurements.
Abstract: We demonstrate for the first time baseband optical carrier-sense multiple access with collision avoidance. We evaluate the performance of the baseband carrier-sense circuit with bit- and packet-error-rate measurements. The sensitivity of the carrier-sense circuit is -51.6 dBm.

7 citations

Proceedings ArticleDOI
10 Jun 1994
TL;DR: In this paper, a 2D optical architecture based on polarization switching by N (N equals 6) spatial light modulators of pxp pixels (p equals 4) is presented.
Abstract: This paper presents recent advances toward the experimental demonstration and the far field pattern characterization of an optically controlled phased array antenna operating at 3 GHz. The 2D optical architecture is based on polarization switching by N (N equals 6) spatial light modulators of pxp pixels (p equals 4). It provides 2N-1 time delays values and an analog control of the 0 to 2(pi) phase for each of the pxp microwave signals actuating an active antenna. These signals originate from the coherent detection of a dual frequency laser beam obtained with an acousto-optic frequency shifter. Furthermore, we also present the principle of a new photodetector based on the synchronous drift of photogenerated carriers with a moving interference pattern. This moving pattern results from the interference of the two components of the dual frequency optical carrier of the microwave signal used in the above architecture. It provides a large detection volume which could yield a high saturation intensity. A theoretical analysis is detailed and followed by an experimental demonstration in GaAs at a frequency f equals 210 MHz.© (1994) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

7 citations

Patent
01 Sep 2017
TL;DR: In this article, a spectrum measurement method based on a microwave frequency sweep source and coherent photoelectric detection was proposed to obtain a broadband spectrum of the optical signal to be measured using an optical frequency comb with N comb teeth.
Abstract: The invention discloses a spectrum measurement method The method comprises the following steps: modulating a microwave signal with fixed frequency and phase onto an optical signal output by a narrow line wide light source through an optical frequency comb modulator to generate an optical frequency comb with N comb teeth; for each comb tooth of the optical frequency comb, by respectively taking each comb tooth as an optical carrier, measuring a spectrum, which falls within a frequency band corresponding to the comb tooth, of an optical signal to be measured through a spectrum measurement method based on a microwave frequency sweep source and coherent photoelectric detection; combining the spectrums within the frequency bands corresponding to all the comb teeth, thus obtaining a broadband spectrum of the optical signal to be measured The invention further discloses a spectrum measurement device According to the spectrum measurement method and the spectrum measurement device, by the use of an optical frequency comb channelization technology, optical carriers of multiple continuous frequency bands are generated; therefore, on the premise of guaranteeing the measurement resolution, the measurement range is substantially expanded; the measurement efficiency is further substantially improved in a parallel manner; the measurement range of a single channel is doubled by using a +2-order optical single sideband swept-frequency signal, so that the measurement bandwidth is further increased

7 citations

Patent
25 Dec 2013
TL;DR: In this article, a central station and a method and a system for downlink signal processing based on millimeter wave communication is proposed. But the system is not suitable for wireless networks.
Abstract: The invention provides a central station, and a method and a system for downlink signal processing based on millimeter wave communication. A first optical carrier signal and a second optical carrier signal are generated by an optical carrier wave generator, wherein the frequency difference of the first optical carrier signal and the second optical carrier signal is equal to a preset millimeter wave signal frequency; then, an optical modulator modulates a baseband signal to the first optical carrier signal to generate a modulated optical carrier signal and sends the modulated optical carrier signal to an optical combiner; next, the optical combiner combines the second optical carrier signal and the modulated optical carrier signal and sends a combined signal to an optical fiber, and the combined signal is transmitted to a base station; and finally, the base station carries out difference frequency processing on the modulated optical carrier signal and the second optical carrier signal to generate a millimeter wave signal carrying a baseband signal and sends the millimeter wave signal to a user terminal. By the adoption of the central station, and the method and the system for downlink signal processing based on millimeter wave communication in the invention, millimeter wave communication between the central station and the user terminal is realized through optical fiber transmission carried out by loading a baseband signal on only one optical carrier wave, the dispersion effect of the optical fiber is reduced, and the quality of signal transmission in the optical fiber is improved.

7 citations

Patent
Xiao Shilin, Bi Meihua, Ling Liu, Tao Qi, Zhou Zhao 
26 Mar 2014
TL;DR: In this paper, the authors proposed a wavelength division multiplexing OFDM-PON transmission system based on remote difference frequency detection, which consists of an optical line terminal, a feed-in type optical fiber network, a far-end node, multiple distribution type OFDM networks and multiple optical network units which are connected in turn.
Abstract: The invention provides a wavelength division multiplexing OFDM-PON transmission system based on remote difference frequency detection. The system comprises an optical line terminal, a feed-in type optical fiber network, a far-end node, multiple distribution type optical fiber networks and multiple optical network units which are connected in turn. The optical network units are used for processing a downlink OFDM signal and extracting a specific X-polarized optical carrier used for modulating an uplink OFDM signal. Heterodyne detection of the downlink OFDM signal and a downlink local oscillator optical signal is realized by the optical network units, and the uplink OFDM signal is outputted to the far-end node and the optical line terminal via the distribution type optical fiber networks simultaneously. The optical line terminal receives the uplink OFDM signal and performs self-homodyne detection on the uplink OFDM signal. With adoption of an OFDM and WDM reuse mode, effective transmission channels and data transmission rate are increased so that larger transmission capacity is realized. Meanwhile, receiving sensitivity is enhanced by adopting the difference frequency detection technology so that transmission in longer distance is realized.

7 citations

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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202322
202237
202168
2020134
2019156
2018141