Photonic vector signal generation employing a novel optical direct-detection in-phase/quadrature-phase upconversion

Jiang, Wen-Jr; Lin, Chun-Ting; Ho, Chung-hung; Wei, Chia-Chien; Shih, Po-Tsung; Chen, Jason Jyehong; Chi, Sien

doi:10.1364/ol.35.004069

Cited by 31 publications

(5 citation statements)

References 9 publications

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“…Rather than applying the IQ RF and IQ bias separately to a parallel pair of IQ modulators, the vector sum of the IQ RF drive and IQ bias may be applied to a single IQ modulator to obtain the same result to the extent that an IQ modulator has a transmission is linear with respect to the IQ vector. Consequently, a single DP-MZM can be used to perform a similar operation [14]. However, without special linearization [15] measures the single DP-MZM arrangement is limited to small modulation indices 1 , 2 resulting in high insertion loss compared to the parallel DP-MZM solution.…”

Section: Principal Of Operationmentioning

confidence: 99%

Photonic generation of broadband RF phase shift with unbounded phase trajectory

Hasan¹,

Hall²

2021

Preprint

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A means of applying an adjustable RF phase shift over a broad band of frequencies is a requirement of diverse application. Photonic solutions to the generation of RF phase shifts have receive significant attention for reasons of reduced cost, compactness and simplicity, yet the achievement of a phase shift extending beyond 360˚ range remains a challenge. The circuit architecture of a compact and broadband RF phase shifter with unbounded range based on two parallel DP-MZM architecture is presented and verified by simulation verification and emulated using off the shelf low frequency electronic components. Results demonstrate that the complex transmission of the phase shifter follows a trajectory that may encircle the origin an arbitrary number of times in either direction. The proposed architecture can be implemented using commercially available DP-QPSK modulator or can be integrated in any material platform that offers linear electro-optic phase modulators.

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Section: Principal Of Operationmentioning

confidence: 99%

Photonic generation of broadband RF phase shift with unbounded phase trajectory

Hasan¹,

Hall²

2021

Preprint

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“…However, for higher order modulation formats, the system performance will deteriorate. The other is based on single sideband (SSB) modulation to generate millimeter waves, which avoids precoding and thus improves spectral efficiency [17], [18]. In addition, single sideband avoids the periodic fading of power introduced by dispersion.…”

Section: Introductionmentioning

confidence: 99%

Chromatic Dispersion Compensation in Phase-Stabilized Dissemination System of Broadband Signals Based on Phase Conjugation

Wang,

Liu,

Zhang

et al. 2023

IEEE Photonics J.

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We present a dispersion-independent phase stabilized distribution architecture for broadband signal based on photonic microwave phase conjugation. RoF signals are distributed from the central station to each base station via a fiber ring network. The elimination of dispersion-induced optical phase decorrelation is achieved because the backward transmission of the phaseconjugated signal, thus the EVM of the RoF signal is optimized. A proof-of-concept experiment is demonstrated. A distribution of QPSK modulated 23-GHz, 400M Baud RoF signals from the central station to a remote base station is obtained via a fiber optic loop. The demodulated constellation and error vector magnitude with and without dispersion compensation are measured at the remote base station. When we set the length of the fiber loop to 58km, the EVM is reduced by 8% after dispersion compensation, and the compensated EVM can reach the threshold value of 17.5% specified by 3GPP for 5G when the received optical power of PD is 4dBm.

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“…The early studies have been published for radio signal generation by photonics precoding techniques [16][17][18], but the bit rate is very low and the digital coherent detection is not adopted in receiver end. With the development of digital signal processing (DSP), the vector mm-wave signal generation based on photonics technology is a very hot topic recently [19][20][21][22][23][24][25][26][27][28][29]. Recently, vector-mm-wave signal generation based on phase modulator has been demonstrated in reference [30].…”

Section: Introductionmentioning

confidence: 99%

16QAM Vector Millimeter-Wave Signal Generation Based on Phase Modulator With Photonic Frequency Doubling and Precoding

Zhao

Chen

et al. 2016

IEEE Photonics J.

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In this paper, we experimentally demonstrate a method to generate frequency-doubling photonic 16-quadrature-amplitude-modulation (16QAM) vector millimeter-wave (mm-wave) signal by using a single phase modulator (PM) with amplitude and phase precoding technique. The PM is driven by a 2-Gbaud 16QAM modulated precoded vector signal at 20GHz. We transmit the generated optical radio frequency (RF) signal at 40GHz over 22-km single-mode fiber, and after heterodyne beating in a single-ended photodiode (PD), 40-GHz electrical vector mm-wave signal displaying regular 16QAM modulation can be generated with a bit-error-ratio (BER) less than the hard-decision forward-error-correction (HD-FEC) threshold of 3.8×10 -3 . To our knowledge, this is the first time to demonstrate high-order QAM vector mm-wave signal generation based on a single PM.

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Photonic vector signal generation employing a novel optical direct-detection in-phase/quadrature-phase upconversion

Cited by 31 publications

References 9 publications

Photonic generation of broadband RF phase shift with unbounded phase trajectory

Photonic generation of broadband RF phase shift with unbounded phase trajectory

Chromatic Dispersion Compensation in Phase-Stabilized Dissemination System of Broadband Signals Based on Phase Conjugation

16QAM Vector Millimeter-Wave Signal Generation Based on Phase Modulator With Photonic Frequency Doubling and Precoding

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