Frequency16-tupled optical millimeter wave generation using dual cascaded MZMs and 2.5 Gbps RoF transmission

Muthu, K. Esakki; Raja, Anita; Shanmugapriya, G.

doi:10.1016/j.ijleo.2017.04.074

Cited by 28 publications

(2 citation statements)

References 19 publications

(14 reference statements)

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“…In previous studies [10], a scheme was proposed to generate a 16-tupling frequency MMW using four cascaded MZMs with an RFSSR of 27 dB. In previous study [11], a 16-tupling frequency MMW was generated with an RFSSR of up to 48 dB based on four connected MZMs. In previous studies [12], a scheme was proposed to generate an 18-tupling frequency MMW using a semiconductor optical amplifier (SOA) and an MZM; however, the tunability of the system was limited because of the use of filters.…”

Section: Introductionmentioning

confidence: 99%

Thirty‐two‐tupling frequency millimeter‐wave generation based on eight Mach–Zehnder modulators connected in parallel

Chen

Dai

et al. 2023

ETRI Journal

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A new method is proposed to generate a 32‐tupling frequency millimeter wave (MMW) with eight Mach–Zehnder modulators (MZMs) connected in parallel. Theoretical analyses and simulation experiments are conducted. The optical sideband suppression ratio (OSSR) of the obtained ±16th order optical sidebands are 61.54 dB and 61.42 dB, and the radio frequency spurious suppression ratios (RFSSRs) of the generated 32‐tupling frequency MMW are 55.52 dB and 55.27 dB based on the theoretical analysis and simulation experiments, respectively; these outcomes verified the feasibility of the new method. The main parameters used to affect the stability of the generated signal are the modulation index and extinction ratio of MZM. Their effects on the OSSR and RFSSR of the generated signals are investigated when they deviate from their designed values. Compared with the other proposed methods for the generation of 32‐tupling frequency MMW by MZM, our method has the best spectral purity and stability, and it is expected to have important MMW over fiber applications.

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Section: Introductionmentioning

confidence: 99%

Thirty‐two‐tupling frequency millimeter‐wave generation based on eight Mach–Zehnder modulators connected in parallel

Chen

Dai

et al. 2023

ETRI Journal

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“…Note, generating higher order carriers is possible using a local oscillator (LO), which operates at frequencies half, a quarter or a sixth of the final carrier frequency. Moreover, the RoF system compactness and a wide range of carrier frequency generation can be achieved [4][5][6]. In [7], an external modulator was proposed to increase the maximum achievable transmission spans.…”

Section: Introductionmentioning

confidence: 99%

A Full-Duplex Optical Millimeter Waves (60-100 GHz) Radio-over-Fiber System

Bahrami

Ghassemlooy

Abadi

et al. 2020

2020 12th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)

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In this paper, we propose and simulate the most compact full-duplex optical millimeter wave radioover-fiber (mmW-RoF) system employing binary phase shift keying (BPSK) and quadrature phase shift keying (QPSK) with error-free transmission over 10, 25 and 50 km of single mode fibers (SMF) in up-link (UL) and down-link (DL). We evaluate the EVM values for DL and UL are < 24% for BPSK and QPSK over the 10, 25 and 50 km of SMF. Keywords-full-duplex optical millimeter wave radio-overfiber(Optical mmW-RoF); dual parallel Mach-Zehnder modulator (DP-MZM

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Photonic generation of frequency 12‐tupling millimeter‐wave based on three cascaded‐MZMs and polarization multiplexing

Rani,

Kedia

2024

Int J Communication

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SummaryOptical millimeter‐wave generation is a predominant approach for the generation of high‐quality carrier signals for future wireless transmissions. This paper proposes an optical frequency 12‐tupling millimeter‐wave generation scheme using three cascaded‐MZMs assisted by polarization multiplexing for carrier suppression. A three‐stage MZM architecture produces the desired sixth‐order sidebands along with the undesired carrier signal. The proper adjustment of polarization direction and angle of polarization rotation lead to the effective suppression of the undesired optical carrier signal. A comprehensive mathematical analysis has been accomplished to evaluate the system's performance, and the obtained results are also validated through simulation findings. The derived results demonstrate that the proposed system is capable of operating over a broad modulation index range extending from 1.5 to 4.5, thereby relaxing the stringent requirements for a constant modulation index. The proposed system generates high‐purity mm‐wave signals with an OSSR of 62.06 dB and an RFSSR of 54.79 dB at a modulation index of 2.6. Moreover, it is also validated that even if the system parameters like modulation index, polarizer rotation angle, and phase difference among RF driving signals deviate from their ideal values to a certain degree, the system performance remains acceptable. The involvement of polarization technique, omission of wavelength‐dependent devices, and a large modulation index operating range make this methodology readily appealing for implementation in radio‐over‐fiber transmissions.

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Frequency16-tupled optical millimeter wave generation using dual cascaded MZMs and 2.5 Gbps RoF transmission

Cited by 28 publications

References 19 publications

Thirty‐two‐tupling frequency millimeter‐wave generation based on eight Mach–Zehnder modulators connected in parallel

Thirty‐two‐tupling frequency millimeter‐wave generation based on eight Mach–Zehnder modulators connected in parallel

A Full-Duplex Optical Millimeter Waves (60-100 GHz) Radio-over-Fiber System

Photonic generation of frequency 12‐tupling millimeter‐wave based on three cascaded‐MZMs and polarization multiplexing

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