Optical single-sideband suppressed-carrier modulator for wide-band signal processing

1998 ◽  
Vol 16 (5) ◽  
pp. 859-863 ◽  
Author(s):  
M.Y. Frankel ◽  
R.D. Esman
Keyword(s):  
Signal Processing ◽  
Wide Band ◽  
Single Sideband ◽  
Optical Single Sideband ◽  
Band Signal

scholarly journals A New Fast Approximate Hilbert Transform with Different Applications

1970 ◽  
Vol 2 (2) ◽  
Author(s):  
Abdulnasir Hossen
Keyword(s):  
Signal Processing ◽  
Hilbert Transform ◽  
Narrow Band ◽  
Analytic Signal ◽  
Time Signal ◽  
Subband Decomposition ◽  
Single Sideband ◽  
Full Band ◽  
The Hilbert Transform ◽  
Band Signal

A new and fast approximate Hilbert transform based on subband decomposition is presented. This new algorithm is called the subband (SB)-Hilbert transform.  The reduction in complexity is obtained for narrow-band signal applications by considering only the band of most energy.  Different properties of the SB-Hilbert transform are discussed with simulation examples.  The new algorithm is compared with the full band Hilbert transform in terms of complexity and accuracy. The aliasing errors taking place in the algorithm are found by applying the Hilbert transform to the inverse FFT (time signal) of the aliasing errors of the SB-FFT of the input signal.  Different examples are given to find the analytic signal using SB-Hilbert transform with a varying number of subbands.  Applications of the new algorithm are given in single-sideband amplitude modulation and in demodulating frequency-modulated signals in communication systems.Key Words:  Fast Algorithms, Hilbert Transform, Analytic Signal Processing.

Optical two-tone generation and SSB modulation using electro-optic modulator with suppressing redundant spectrum components

2011 ◽  
Vol 3 (3) ◽  
pp. 295-300 ◽  
Author(s):  
Akira Enokihara ◽  
Tadashi Kawai ◽  
Tetsuya Kawanishi
Keyword(s):  
Input Power ◽  
Intensity Level ◽  
Optical Signals ◽  
Single Sideband ◽  
Electro Optic ◽  
Rf Signals ◽  
Frequency Components ◽  
Optical Single Sideband ◽  
Tone Generation ◽  
Electro Optic Modulator

Doubled frequency optical two-tone generation and optical single sideband (SSB) modulation by the dual-electrode-type electro-optic (EO) modulator with a single Mach–Zehnder (MZ) interferometer were considered. We theoretically showed that redundant spectrum components in the modulated optical signals, which are caused by the imbalance of light splitting ratio between the two arms of the interferometer, are significantly suppressed by controlling the input power ratio of RF modulation signals applied to each electrode. This effect was confirmed by the experiment, where an optical two-tone with the redundant components 49.8 dB lower than the primary two-tone components in intensity level was obtained. This method is also valid for suppression of undesired frequency components of RF signals that are generated at a photo detector from the optical two-tone waves propagated through a dispersive optical fiber.

Optical Single Sideband Signal Reconstruction Based on Time-Domain Iteration

2021 ◽  
pp. 1-1
Author(s):  
Wei Wang ◽  
Dongdong Zou ◽  
Zibin Li ◽  
Qi Sui ◽  
Zizheng Cao ◽  
...  
Keyword(s):  
Time Domain ◽  
Signal Reconstruction ◽  
Single Sideband ◽  
Optical Single Sideband
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