Zobrazeno 1 - 10
of 1 166
pro vyhledávání: '"Jian Guo Liu"'
Autor:
Tao Lin, Haiyang Yu, Shanghong Zhao, Jian Guo Liu, Kun Zhang, Wei Jiang, Guodong Wang, He Li, Xuan Li
Publikováno v:
IEEE Access, Vol 8, Pp 40378-40388 (2020)
In this paper, a photonic based pre-coding for multiple input multiple output (MIMO) satellite communication is realized without digital signal processing (DSP) structure. It should be noted that when the microwave signal transmits through the wirele
Externí odkaz:
https://doaj.org/article/4694fc2ddfa848ce956cff7815bbe239
Publikováno v:
International Journal of Ophthalmology, Vol 17, Iss 12, Pp 2316-2320 (2024)
AIM: To assess the corneal high-order aberration (HOA) and its correlation with corneal morphological parameters in patients with bilateral keratoconus (KCN) and unilateral Vogt's striae. METHODS: A total of 168 eyes of 84 patients with KCN, whose co
Externí odkaz:
https://doaj.org/article/9c098e60027f4dfb81cc12ef419fb738
Publikováno v:
IEEE Photonics Journal, Vol 8, Iss 1, Pp 1-7 (2016)
We present a continuously tunable single-notch microwave photonic filter (MPF) using polarization processing of a nonsliced amplified spontaneous emission (ASE) source and a laser diode (LD). The ASE source is used to generate a single-passband MPF,
Externí odkaz:
https://doaj.org/article/77cab0816df142149867b8505318ac06
Publikováno v:
IEEE Photonics Journal, Vol 8, Iss 6, Pp 1-8 (2016)
We demonstrate an approach to achieve a widely tunable photonic-assisted microwave phase shifter (MPS) based on single polarization multiplexing electro-optic modulator (PM-EOM). The PM-EOM can generate orthogonally polarized and phase coherent optic
Externí odkaz:
https://doaj.org/article/e124175f38fb46b9afa7514a20b9b004
Publikováno v:
IEEE Photonics Journal, Vol 7, Iss 1, Pp 1-8 (2015)
A microwave photonic filter (MPF) with complex coefficient based on the frequency transparent magnitude response by independent control of the frequency and power of two stimulated Brillouin scattering (SBS) pumps is proposed and experimentally demon
Externí odkaz:
https://doaj.org/article/611e96fff8fb4a7b88ca641ed34df8f4
Publikováno v:
IEEE Photonics Journal, Vol 7, Iss 3, Pp 1-8 (2015)
A novel optical frequency-hopping scheme in wavelength-division multiplexing (WDM) systems is proposed to achieve secure communications with high capacity. Frequency hopping is realized by the hopping of digital signals among different channels. In t
Externí odkaz:
https://doaj.org/article/d2c5359ab54643cd9adaa4086e2ad411
Publikováno v:
IEEE Photonics Journal, Vol 6, Iss 2, Pp 1-8 (2014)
We propose a novel approach for the generation of flat optical frequency comb (OFC) using a single polarization modulator (PolM) and a Brillouin-assisted power equalizer (BAPE). The reference radio-frequency (RF) signal applied to the PolM is provide
Externí odkaz:
https://doaj.org/article/e42484e6ee804bc3950f524b3a779f17
Publikováno v:
IEEE Photonics Journal, Vol 6, Iss 6, Pp 1-10 (2014)
We propose a new method to improve the accuracy of an optical vector network analyzer (OVNA) based on stimulated Brillouin scattering (SBS) in a dispersion-shifted fiber (DSF). Generally, the measurement error of the OVNA mainly derives from the beat
Externí odkaz:
https://doaj.org/article/589e6674ab6c41fb95c8e913a9016e8a
Publikováno v:
IEEE Photonics Journal, Vol 6, Iss 6, Pp 1-8 (2014)
We report a new photonic microwave pulse generator using a phase-modulator-based Sagnac interferometer (PM-SI) and wavelength-to-time mapping in a dispersive element. The key significance of the proposed scheme is that the phase of the generated micr
Externí odkaz:
https://doaj.org/article/c0b22704e1c2496bb0f00275c0416113
Publikováno v:
IEEE Photonics Journal, Vol 6, Iss 6, Pp 1-7 (2014)
We proposed a new approach to generate full-duty-cycle triangular waveforms using a sinusoidal radio-frequency (RF) signal based on stimulated Brillouin scattering. In order to generate a triangular waveform, the even-order harmonics of the RF signal
Externí odkaz:
https://doaj.org/article/2a514b968ea74cdc8beb12dd5c945df5