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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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Journal ArticleDOI
TL;DR: A novel scheme of ultra-wideband (UWB) doublet pulse generation using a semiconductor optical amplifier (SOA) based polarization-diversified loop (PDL) without any assistant light shows some advantages, such as simple implementation without assistant light and single optical carrier operation with good fiber dispersion tolerance.
Abstract: We propose and demonstrate a novel scheme of ultra-wideband (UWB) doublet pulse generation using a semiconductor optical amplifier (SOA) based polarization-diversified loop (PDL) without any assistant light. In our scheme, the incoming Gaussian pulse is split into two parts by the PDL, and each of them is intensity modulated by the other due to cross-gain modulation (XGM) in the SOA. Then, both parts are recombined with incoherent summation to form a UWB doublet pulse. Bi-polar UWB doublet pulse generation is demonstrated using an inverted Gaussian pulse injection. Moreover, pulse amplitude modulation of UWB doublet is also experimentally demonstrated. Our scheme shows some advantages, such as simple implementation without assistant light and single optical carrier operation with good fiber dispersion tolerance.

9 citations

Journal ArticleDOI
TL;DR: In this paper, a narrowband fiber Bragg grating (FBG) notch filter is used to measure the RF power ratio of the filtered and non-filtered signals.
Abstract: We propose and experimentally demonstrate a chromatic-dispersion (CD) monitoring method based on radio-frequency (RF) clock power ratio measurement in 38-Gb/s nonreturn-to-zero differential quadrature phase-shift keying (NRZ-DQPSK) and 57-Gb/s NRZ differential 8-level phase-shift keying (D8PSK) systems. A narrowband fiber Bragg grating (FBG) notch filter is centered at the optical carrier wavelength, such that the RF clock power decreases with CD. On the other hand, RF clock power increases with CD in the absence of the notch filter. By using the RF power ratio of the filtered and nonfiltered signals, polarization-mode-dispersion (PMD) effects on RF power ratio can be eliminated and CD measurement sensitivity can be increased. The CD monitoring range is 0 ~ 250 ps/nm in the systems with a symbol rate of 19-Gsym/s. Moreover, the proposed CD-monitoring method is not affected by received optical power.

9 citations

Patent
He Chen, Wei Guo, Jie Shi, Shilin Xiao, Min Zhu 
09 Jun 2010
TL;DR: In this paper, a self-excitation multi-wavelength dynamically dispatched optical network unit in passive optical network, belonging to the technical field of optical communication, is presented, where an uplink data transmitter, a downlink data receiver and a first optical circulator are connected with the first optical circuit for transmitting downlink optical signals.
Abstract: The invention discloses a self-excitation multi-wavelength dynamically dispatched optical network unit in passive optical network, belonging to the technical field of optical communication. The optical network unit comprises an uplink data transmitter, a downlink data receiver and a first optical circulator, wherein the output end of the first optical circulator is connected with the downlink data receiver for transmitting downlink data optical signals; the input end of the first optical circulator is connected with the uplink data transmitter for transmitting uplink data optical signals; and the uplink data transmitter comprises a FP multi-longitudinal mode laser, an adjustable band-pass filter, an optical splitter/coupler and an optical reflection ring. In the invention, multi-wavelength dynamically modulated uplink optical carrier is generated based on the self-excitation working mode of the FP multi-longitudinal mode laser, thereby greatly increasing the uplink transmission bandwidth, flexibly and effectively sharing all uplink wavelength resources, improving the use ratio of the uplink wavelength resource, ensuring simple structure and low cost, according with the requirement of colourless transmission of the optical network unit and meeting the development requirement of dramatically increased uplink access ability for users.

9 citations

Journal ArticleDOI
TL;DR: In this article, a 3-bit flash analog-to-digital converter for electronic dispersion compensation (EDC) was developed using InP HBTs, which enables oversampling acquisition for 10 Gbit/s non-return-tozero (NRZ) signals.
Abstract: A 3-bit flash analog-to-digital converter (ADC) for electronic dispersion compensation (EDC) was developed using InP HBTs. Nyquist operation was confirmed up to 24 Gsps, which enables oversampling acquisition for 10 Gbit/s non-return-to-zero (NRZ) signals. The ADC can also be operated at up to 37 Gsps for low input frequencies. To reduce aperture jitter and achieve a wide band of over 7 GHz, an analog input signal for all pre-amplifiers and a clock signal for all latched comparators are provided as traveling waves through coplanar transmission lines. EDC was demonstrated by capturing a 10-Gbit/s pseudo-random bit stream (PRBS) with the waveform degraded by polarization-mode dispersion (PMD). By using the captured data, we confirmed that a calculation of a transversal filter mitigates PMD.

9 citations

Journal ArticleDOI
TL;DR: A technology to extend the bandwidth of optical transmitters based on optical time interleaving based on an optical time-interleaving in-phase-and-quadrature modulator that generates optical signals with a bandwidth of each side of the optical carrier that is up to twice that of the electronic sub-signals sent to the IQMs.
Abstract: We demonstrate a technology to extend the bandwidth of optical transmitters based on optical time interleaving. An optical time-interleaving in-phase-and-quadrature (IQ) modulator (TI-IQM), which consists of a 1-to-2 optical selector followed by two IQMs, generates optical signals with a bandwidth of each side of the optical carrier that is up to twice that of the electronic sub-signals sent to the IQMs. The sub-signals are generated by a digital spectral weaver followed by digital-to-analog converters and tailored so that the targeted extended-bandwidth signal is obtained as the final optical output from the TI-IQM. We verified the concept in a transmission experiment with 150-GBaud 4, 8, and 16-level quadrature amplitude modulation. We successfully generated optical signals with a bandwidth of each side of optical carrier of around 76 GHz, which is almost twice that of the electronic sub-signals.

9 citations

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