Multi-band local microwave signal generation based on an optical frequency comb generator

Wang, Wen Ting; Liu, Jian Guo; Wen, Sun; Chen, Wei; Zhu, Ning Hua

doi:10.1016/j.optcom.2014.08.056

Cited by 14 publications

(2 citation statements)

References 22 publications

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“…In contrast, an optical frequency comb generator (OFCG) can produce highly phase correlated optical tones over a wide range with a fixed frequency spacing [11] and by filtering two lines of the appropriate frequency spacing, with subsequent heterodyning in a photodiode, it is possible to generate pure mm-wave and THz signals above 100 GHz [12]. In [13], an OFCG was used to generate a tunable microwave signal in which the frequency tuning was achieved via tuning the bias current of a slave laser that was injection-locked to one of the optical sidebands of the comb. However, tunability was restricted between S-band and Ka-band.…”

Section: Introductionmentioning

confidence: 99%

Tunable THz Signal Generation and Radio-Over-Fiber Link Based on an Optoelectronic Oscillator-Driven Optical Frequency Comb

Hasanuzzaman

Shams

Renaud

et al. 2020

J. Lightwave Technol.

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We propose and demonstrate experimentally a photonic THz signal generation technique based on a tunable optoelectronic oscillator (OEO), and its application in a radio over fiber (RoF) link. The OEO's frequency is tuned by varying the bandwidth of a tunable optical bandpass filter (TOBF) that is cascaded with a phase modulator (PM). The resulting tunable microwave photonic filter is used to generate OEO oscillations from 6.58 GHz up to 18.36 GHz (with a phase noise of ≤-103 dBc/Hz at 10 kHz offset from the carrier frequency). The OEO is subsequently used to drive an optical comb, generating 22 comb lines with a frequency spacing of 17.33 GHz covering a bandwidth of 360 GHz within a 20 dB envelope. By selecting two optical comb lines with a wavelength selective switch (WSS) and beating them in a uni-traveling carrier photodiode (UTC-PD), THz signals are generated at 101.5 GHz and 242.6 GHz with phase noise of-90 dBc/Hz and-78 dBc/Hz, respectively at 10 kHz offset from carrier frequency. Tunable mm-wave and THz signals can be generated either by changing the OEO oscillation frequency or the selected comb lines. Using the OEO driven OFCG, we implemented a RoF link at 242.6 GHz with a data rate of 24 Gbps over a wireless distance of 30 cm and with a bit error rate (BER) below the hard decision forward error correction (FEC) limit of 3.8×10-3. This method allows the creation of an allphotonic frequency reconfigurable THz signal generator and RoF system.

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Section: Introductionmentioning

confidence: 99%

Tunable THz Signal Generation and Radio-Over-Fiber Link Based on an Optoelectronic Oscillator-Driven Optical Frequency Comb

Hasanuzzaman

Shams

Renaud

et al. 2020

J. Lightwave Technol.

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“…Over the last few years, optical frequency comb (OFC) generation has emerged as a research topic of particular interest with a wide variety of applications such as spectroscopy [1,2], THz generation [3], LIDAR [4], optical communications [5], and physical variable sensing [6]. Additionally, the gain-switching (GS) technique has received special attention over other OFC generation techniques (e.g., mode-locking [7] and electro-optic modulation [8]) owing to its high flexibility, easy implementation, and low losses [9]. Frequency combs generated through GS of semiconductor lasers are characterized by high efficiency, high correlation between modes, and good tunability characteristics [10].…”

Section: Introductionmentioning

confidence: 99%

Self-starting VCSEL-based optical frequency comb generator

et al. 2020

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In this paper, we present the simulation and experimental results of the first closedloop system based on a directly modulated VCSEL in a gain-switching condition to generate optical frequency combs (OFC). In order to simulate the self-starting VCSEL-based optical frequency comb generator (SVOFC), we applied an intrinsic parameter extraction process to a C-band VCSEL using laser rate equations, static and dynamic measurements, and equivalent circuit models. The widest (62 GHz) and flattest (0.8) simulated OFC is obtained when the repetition frequency f 0 is 2.5 GHz. Implementation of the C-band SVOFC also shows that under constant electrical conditions, flatness higher than 0.85 and spectral widths of 50 GHz are obtained when f 0 = 2.5 GHz. The lowest phase noise at 10 kHz from the extracted electrical carrier is-127 dBc/Hz and is obtained when the optical fiber length is 5 km and f 0 = 1.25 GHz.

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Electro‐Optic Frequency Combs: Theory, Characteristics, and Applications

Zhuang

et al. 2023

Laser & Photonics Reviews

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Optical frequency combs (OFCs) are a unique kind of light source, which are represented as a series of equally spaced coherent spectral lines in the frequency domain. OFCs can mainly be divided into mode-locked lasers, Kerr frequency combs, and electro-optic frequency combs (E-O combs), which have broad applications in optical communications, frequency metrology, atomic clocks, distance ranging, spectroscopy, and arbitrary waveform generation. Among them, E-O combs feature some unique advantages, such as fast tunable repetition rate, high sidebands power, and reconfigurability of the comb spectrum. Especially in recent years, with the development of micro-nano processing technology, on-chip E-O combs have become a dynamic research topic with many fundamental scientific problems as well as engineering applications for further exploration. To summarize the past development and envision the prosperous future of E-O combs, the area of E-O combs is reviewed from the following aspects: development of E-O combs; theory including the generation process of E-O combs and the electro-optic modulation models; important techniques including flattening, broadening, noise, and stability controlling; applications including communications, ranging, spectroscopy, wavelength calibration of astronomical spectrographs, and microwave generation; and pros and cons when compared with other OFCs.

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Multi-band local microwave signal generation based on an optical frequency comb generator

Cited by 14 publications

References 22 publications

Tunable THz Signal Generation and Radio-Over-Fiber Link Based on an Optoelectronic Oscillator-Driven Optical Frequency Comb

Tunable THz Signal Generation and Radio-Over-Fiber Link Based on an Optoelectronic Oscillator-Driven Optical Frequency Comb

Self-starting VCSEL-based optical frequency comb generator

Electro‐Optic Frequency Combs: Theory, Characteristics, and Applications

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