Topic
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.
Papers published on a yearly basis
Papers
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TL;DR: In this article, a novel method to generate ultrawideband (UWB) doublets is proposed and experimentally demonstrated, which is based on exploiting the cross-phase modulation in a semiconductor optical amplifier (SOA).
Abstract: In this paper, a novel method to generate ultrawideband (UWB) doublets is proposed and experimentally demonstrated, which is based on exploiting the cross-phase modulation in a semiconductor optical amplifier (SOA). The key component is an integrated SOA Mach-Zehnder interferometer pumped with an optical carrier modulated by a Gaussian pulse. The transfer function of the nonlinear conversion process leads to the generation of UWB doublet pulses by tuning the SOA currents to different values.
8 citations
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13 Aug 1997TL;DR: In this article, the amplitude modulation of the optical carrier signals for different channels using different LF frequencies, before combining the optical for all channels using a wavelength-selective optical multiplexer (3), with conversion of optical signal into a corresponding electrical signal.
Abstract: The method uses amplitude modulation of the optical carrier signals for the different channels using different LF frequencies, before combining the optical for all channels using a wavelength-selective optical multiplexer (3), with conversion of the optical signal into a corresponding electrical signal. The LF signals for the different channels are isolated amplitudes of the LF signals for the individual channels are determined, for controlling the laser light sources of the channel transmitters.
8 citations
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28 Oct 2013
TL;DR: In this paper, a tunable optical filter for receiving an optical signal, performing wavelength or optical carrier demultiplexing on the optical signal and out-of-band ASE noise suppression, is presented.
Abstract: The present invention discloses a method and an apparatus for measuring quality parameters of optical transmission channels. The apparatus comprises: a tunable optical filter for receiving an optical signal, performing wavelength or optical carrier demultiplexing on the optical signal, and out-of-band ASE noise suppression; an optical coherent receiver connected to the tunable optical filter, for performing polarization- and phase-diversity detection on the filtered optical signal and converting it into multiple lane baseband electrical signals; analog-to-digital converters for sampling and quantizing the multiple lane baseband electrical signals so as to convert the them into multiple lane digital signals; a digital signal processing module for processing the multiple lane digital signals to obtain quality parameters; and an display module for displaying the quality parameters. By the device according to an embodiment of the invention, real-time measurement of various key performance parameters of the 40 Gbps, 100 Gbps and extra-100 Gbps (for example, 200 Gbps, 400 Gbps and 1 Tbps) coherent polarization-multiplexed system is achieved simultaneously, especially the issue of real-time measurement of the in-service in-band OSNR is solved. Therefore, the network operation and maintenance are facilitated and the cost of network operation and maintenance is saved.
8 citations
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TL;DR: In this paper, a laboratory demonstration is reported in which low-cost optoelectronic devices are used for transmission over 9/125?m single-mode fiber at 2 Mbit/s.
Abstract: A laboratory demonstration is reported in which low-cost optoelectronic devices are used for transmission over 9/125 ?m single-mode fibre at 2 Mbit/s. This novel system has been designed for application in local network and office systems where optical device cost constraints present severe restrictions on the technology options.
8 citations
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TL;DR: Using dual optical carriers and setting their wavelengths oppositely detuned from two resonant frequencies of a notch ring resonator, the residual phase induced by the ring resonators at radio frequencies falling outside the region of the notch stopband is reduced, thus the out-of-band rejection ratio and shape factor of the microwave photonic filter are greatly improved.
Abstract: A tunable bandpass microwave photonic filter can be achieved by using a notch ring resonator with optical phase modulation. However, the filter’s out of band rejection ratio and shape factor are limited due to the ring resonator’s residual phase, which can seriously degrade the filter’s performance. By using dual optical carriers and setting their wavelengths oppositely detuned from two resonant frequencies of a notch ring resonator, the residual phase induced by the ring resonator at radio frequencies falling outside the region of the notch stopband is reduced, thus the out-of-band rejection ratio and shape factor of the microwave photonic filter are greatly improved. The proposed microwave photonic filter was both verified theoretically and experimentally. Compared with single optical carrier method, the out-of-band rejection ratio of the filter can be enhanced from 17.7dB to 31.5dB, and the filter’s shape factor is improved from 3.05 to 1.78. Besides, the filter’s frequency and bandwidth can be tuned by varying the wavelengths of the two optical carriers and the ring resonator’s coupling coefficients. Finally, a tunable bandpass microwave photonic filter with frequency tuning range of 2~14GHz, 3dB bandwidth tuning range of 0.673~2.798GHz is demonstrated.
8 citations