Wideband Microwave Frequency Division Based on an Optoelectronic Oscillator

Liu, Shifeng; Lv, Kailin; Fu, Jianbin; Wu, Lugang; Pan, Wansheng; Pan, Shilong

doi:10.1109/lpt.2019.2896062

Cited by 25 publications

(12 citation statements)

References 27 publications

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“…Such approaches, however, are lacking flexibility for the division of different frequencies due to the mechanism of narrowband filtering. Recently, we proposed a wideband frequency divider with a division factor of two by an OEO‐based divider [7]; however, the harmonic components suppression is poor.…”

Section: Introductionmentioning

confidence: 99%

Broadband two‐thirds photonic microwave frequency divider

et al. 2019

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A broadband two-thirds frequency divider based on two cascaded carrier-suppressed double sideband (CS-DSB) modulators is proposed and experimentally demonstrated. The first CS-DSB modulator is aimed to introduce an RF signal under frequency division to the system, and the second one is employed in an optoelectronic oscillator (OEO) loop to avoid the OEO from free running. By mixing the injection frequency and the oscillation frequency in the OEO loop, oscillation of a signal with its frequency equal to two-thirds of the injection frequency is established. An experiment is carried out, RF signals with frequencies from 12.3 to 17.7 GHz are successfully divided into 8.2 to 11.8 GHz. The maximum power ripple is 2.79 dB and the harmonic components suppression ratio is larger than 36.13 dB. Introduction: Frequency dividers play a significant role in optical communication systems and microwave photonic areas for agile frequency manipulation and signal processing [1-3]. Traditionally, frequency dividers are realised in the electrical domain with purely electronic active components [1]. Nevertheless, the active electrical components would introduce additional noise and deteriorate the signal-to-noise ratio of the systems. Also, electrical frequency dividers would also suffer from limited operational bandwidth and poor harmonic components suppression ratio. To deal with these problems, frequency dividers realised using photonic techniques are highly desired, thanks to the intrinsic characteristics brought by photonic techniques such as large bandwidth, high frequency, and electromagnetic interference immunity. Optical frequency division could be implemented based on the non-linear dynamics of a semiconductor laser [4], a non-linear fibre loop mirror [5], or an injection-locked optoelectronic oscillator (OEO) [6]. Such approaches, however, are lacking flexibility for the division of different frequencies due to the mechanism of narrowband filtering. Recently, we proposed a wideband frequency divider with a division factor of two by an OEO-based divider [7]; however, the harmonic components suppression is poor. In this Letter, a two-thirds frequency divider with large frequency tuning range and good harmonic suppression is proposed and experimentally demonstrated based on cascaded carrier-suppressed double sideband (CS-DSB) modulations, realised by two Mach-Zehnder modulators (MZMs) biased at the minimum transmission point (MITP). When an RF signal with a frequency of f 1 is applied to the first MZM (MZM1), two sidebands that are separated by 2f 1 would be generated, which is then sent to an OEO containing the second MZM (MZM2). Assume the frequency of the oscillation signal is f 2 , at the output of MZM2 four sidebands with offset frequencies to the optical carrier of −f 1 −f 2 , −f 1 + f 2 , f 1 −f 2 , f 1 + f 2 would be generated. To maintain the oscillation of the OEO, the beating frequencies of − f 1 + f 2 and f 1 − f 2 should equal to f 2 , leading to f 2 = 2/3f 1. As a result, two-thirds frequency division can be real...

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Section: Introductionmentioning

confidence: 99%

Broadband two‐thirds photonic microwave frequency divider

et al. 2019

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“…In addition, frequency division can be achieved by sub‐harmonically injection‐locking an optoelectronic oscillator (OEO) [9]. What is more, the half frequency division with RF signals can be realised based on an OEO without introducing RF filters in the loop [10].…”

Section: Introductionmentioning

confidence: 99%

“…Traditionally, frequency dividers can be achieved using electrical techniques, but they are usually limited in working speed [1] and operation bandwidth [4]. Frequency dividers based on photonic techniques can realise the frequency division of ultra-high frequency signals with broad operation bandwidth and high working frequency [3,[5][6][7][8][9][10]. In [5], an optical frequency divider for coherent dual-wavelength optical signals is proposed using an optical frequency comb (OFC).…”

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confidence: 99%

One‐third optical frequency divider for dual‐wavelength optical signals based on an optoelectronic oscillator

et al. 2020

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An optical frequency divider for dual-wavelength optical signals based on an optoelectronic oscillator (OEO) is proposed and experimentally demonstrated. The Mach-Zehnder modulator in the OEO is biased at the minimum transmission point, the OEO-based frequency divided signal originates from system noise. When the oscillation phase and amplitude conditions met, it gets stabilised at an oscillation frequency which is one-third of the frequency interval of the injected dual-wavelength optical signal. A proof-of-concept experiment is verified. With the frequency interval of the dual-wavelength optical signal ranging from 101.4 to 120.6 GHz, the RF signals ranging from 33.8 to 40.2 GHz are successfully generated. The power ripple is lower than 2.92 dB and the rejection ratio of the harmonic components is larger than 39 dB for all the conditions. The phase noise values of the generated RF signals are kept to be around −105 dBc/Hz@10 kHz.

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“…Recently, photonic-assisted approaches are proposed to realize optical frequency division [9]- [11] and microwave frequency division [12]- [15]. Among them, the OEOs were used to achieve microwave frequency division [13]- [15], which have the potential to obtain the large frequency division ratio and low phase noise, simultaneously. In [13], a 20 GHz frequency divider with a division factor of 2 was reported based on a super-harmonic injection locked OEO.…”

Section: Introductionmentioning

confidence: 99%

“…In [14], a 24 GHz frequency divider with variable division ratio was demonstrated. In [15], a wideband microwave frequency divider based on an OEO was demonstrated. By using carrier-suppressed optical double sideband (CS-ODSB) modulation, a frequency division ratio of 2 was realized.…”

Section: Introductionmentioning

confidence: 99%

Injection-Locked Millimeter Wave Frequency Divider Utilizing Optoelectronic Oscillator Based Optical Frequency Comb

Peng

Guo

et al. 2019

IEEE Photonics J.

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We propose and experimentally demonstrate a photonic millimeter-wave frequency divider based on a super-harmonic injection-locked optoelectronic oscillator (OEO) and an optical frequency comb. The optical frequency comb generator is incorporated into an OEO loop to create broadband comb lines with low noise. By injecting a millimeter-wave with frequency around N times of the fundamental oscillating frequency f 0 of the OEO, the injection signal can be down-converted to an intermediate frequency (IF) signal close to the oscillating frequency of the OEO. The free running OEO is synchronized with the IF signal via an injection locking mechanism. Consequently, it forms an injection-locked frequency divider as the frequency ratio between the injection signal and OEO's output signal is precisely equal to N. We carry out an experiment to divide the 45 GHz signal into 7.5 GHz and the experimental results agree well with the theoretical analysis. By changing the frequency of the injection signal, division ratio from 2 to 5 is also demonstrated on one setup. Due to the broadband spectra of the optical comb and low phase noise characteristics of the OEO, it is potential to realize very large division ratio and low phase noise for multiple input frequencies mf 0 .

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Wideband Microwave Frequency Division Based on an Optoelectronic Oscillator

Cited by 25 publications

References 27 publications

Broadband two‐thirds photonic microwave frequency divider

Broadband two‐thirds photonic microwave frequency divider

One‐third optical frequency divider for dual‐wavelength optical signals based on an optoelectronic oscillator

Injection-Locked Millimeter Wave Frequency Divider Utilizing Optoelectronic Oscillator Based Optical Frequency Comb

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