UWB monocycle pulse generation by optical polarisation time delay method

Chen, H.; Chen, Minghua; Qiu, Ciyuan; Zhang, J.; Xie, Shizhong

doi:10.1049/el:20070042

Cited by 48 publications

(24 citation statements)

References 8 publications

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“…The all-optical schemes can be easily incorporated into UWB-over-fiber networks and eventually simplify the entire network. The hybrid methods to generate UWB signals are reported with microwave differentiators [9], optical phase modulators [10][11][12][13], chirp-to-intensity converters [10,14], intensity modulators [15][16][17], and photonic microwave delay-line filters [18]. The all-optical methods are reported with semiconductor optical amplifiers (SOAs) [19][20][21][22], dispersion shifted fibers [23], and frequency to time mapping technology [24].…”

Section: Introductionmentioning

confidence: 99%

All-optical ultra-wideband pulse generation based on semiconductor optical amplifiers

Dong

Zhang

Huang

2009

Front. Optoelectron. China

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Several all-optical methods for ultra-wideband (UWB) pulse generation based on various nonlinearities of single semiconductor optical amplifiers (SOAs), namely cross phase modulation (XPM), cross gain modulation (XGM), and a hybrid of self phase modulation (SPM) and XGM, have been demonstrated. In the first method, UWB doublet pulses are realized with XPM. The input optical Gaussian pulse will be converted to two polarity-reversed monocycle pulses by a blue shifted and a red shifted optical bandpass filters respectively. These two monocycle pulses are then combined with proper time delay to generate two polarity-reversed doublet pulses. Second, two polarityreversed monocycle pulses are obtained based on XGM of the SOA and group delay of the single mode fiber (SMF). In the scheme, two polarity-reversed Gaussian pulses are generated due to XGM, and then the mixed signal is converted to a monocycle shape due to the group delay of the SMF. Finally, we present UWB doublet generation based on SPM. The monocycle pulse is generated from a dark return-to-zero (RZ) signal and converted to a doublet pulse by injecting an additional probe signal with the SMF transmission. For the first time and to the best of our knowledge, we report that the generated doublet pulses are transmitted over 5 km SMF by proper dispersion compensation without distortion. The configuration of our alloptical methods is compact and simple. The feasibility to implement the pulse shape modulation and pulse polarity modulation is discussed.

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Section: Introductionmentioning

confidence: 99%

All-optical ultra-wideband pulse generation based on semiconductor optical amplifiers

Dong

Zhang

Huang

2009

Front. Optoelectron. China

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“…Recently, Wang et al presented UWB monocycle and doublet pulses generation based on spectrum shaping in an all-fiber spectrum shaper and dispersion-induced frequency-to-time conversion in a dispersive fiber [7]. Chen et al proposed a scheme to generate UWB monocycle pulses using a single phase modulator followed by a polarization-maintaining fiber (PMF) [8,9]. Dong et al presented all optical UWB monocycle generation utilizing cross phase modulation of the SOA [10] and the gain saturation effect of the SOA [11].…”

Section: Introductionmentioning

confidence: 99%

Photonic generation of ultrawideband signals using a delay interferometer

Wang

Zhang

2009

Front. Optoelectron. China

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We demonstrate a novel scheme to generate ultrawideband (UWB) monocycle and doublet pulses by inputting a dark return-to-zero (RZ) signal into a delay interferometer (DI), which accords with the general features in future applied UWB system, namely, single optical source input, simple configuration and passive device. The two polarized interferential beams have a time delay and a phase difference when they propagate through the DI. By adjusting polarization controllers (PCs), the total phase difference, i.e., the sum of the relative opticalphase difference between two orthogonally polarized components caused by PCs and the optical-phase shift due to birefringence of the polarization-maintaining fiber (PMF), the orientation angle of the polarization beamsplitter (PBS) relative to the two axes of the PMF are able to be changed and controlled. When the appropriate conditions are met, UWB monocycle and doublet pulses are generated conveniently.

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“…4 Many works focused on optical generation and distribution of monocycle and doublet pulses have been reported. [5][6][7][8][9][10] These schemes can only be used in singleband UWB systems. In fact, an alternative signaling format for single-band UWB impulse radio is to use multiband ͑MB͒ UWB waveforms, which were proposed for wireless personal area networks ͑WPANs͒ under IEEE 802.15.…”

Section: Introductionmentioning

confidence: 99%

Ultrawideband pulse generation using hybrid photonic microwave filters

Chen

Xie

2008

Opt. Eng

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Abstract.A novel ultrawideband ͑UWB͒ pulse generation method using hybrid photonic microwave filters is proposed and demonstrated. Both electrical and optical delay are employed to construct microwave filters. The coefficients can be set to be either positive or negative by fiber chromatic dispersion and polarization modulation techniques, respectively. The generated UWB pulse has bandwidth larger than 1.8 GHz and can be used in multiband modulation UWBover-fiber systems.

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UWB monocycle pulse generation by optical polarisation time delay method

Cited by 48 publications

References 8 publications

All-optical ultra-wideband pulse generation based on semiconductor optical amplifiers

All-optical ultra-wideband pulse generation based on semiconductor optical amplifiers

Photonic generation of ultrawideband signals using a delay interferometer

Ultrawideband pulse generation using hybrid photonic microwave filters

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