On-chip programmable microwave photonic filter with an integrated optical carrier processor

Daulay, Okky; Botter, Roel; Marpaung, David

doi:10.1364/osac.400037

Cited by 23 publications

(30 citation statements)

References 20 publications

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“…Therefore, we included an RF amplifier with gain of 24 dB to offset excess coupling losses from this experimental setup. We note that the performance of this MWP filter with two PICs and an RF amplifier is comparable to typical performance of MWP filters with a single PIC without an RF amplifier [56]. Reflections and losses can be reduced through the use of engineered transitions which optimise taper profiles and mode matching between materials, which will remove the need for RF amplification.…”

Section: Performance Analysis and Discussionmentioning

confidence: 68%

Multi-Band and Frequency-Agile Chip-Based RF Photonic Filter for Ultra-Deep Interference Rejection

Garrett

Liu

Merklein

et al. 2022

J. Lightwave Technol.

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Section: Performance Analysis and Discussionmentioning

confidence: 68%

Multi-Band and Frequency-Agile Chip-Based RF Photonic Filter for Ultra-Deep Interference Rejection

Garrett

Liu

Merklein

et al. 2022

J. Lightwave Technol.

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“…This power can be provided from an on-chip pump laser realized in a hybrid III-V silicon nitride technology [68], opening the path way to all-integrated narrow linewidth SBS lasers at various wavelength bands. Finally, integration of the optimized SBS waveguides with advanced microwave photonic spectral shaping circuits [69,70] can lead to allintegrated high resolution RF filter with low noise figure and ultra-high high dynamic range [71].…”

Section: Sbs Optimizationmentioning

confidence: 99%

Guided-Acoustic Stimulated Brillouin Scattering in Silicon Nitride Photonic Circuits

Botter¹,

Ye²,

Klaver³

et al. 2021

Preprint

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Coherent optomechanical interaction between acoustic and optical waves known as stimulated Brillouin scattering (SBS) can enable ultra-high resolution signal processing and narrow linewidth lasers important for next generation wireless communications, precision sensing, and quantum information processing. While SBS has recently been studied extensively in integrated waveguides, many implementations rely on complicated fabrication schemes, using suspended waveguides, or non-standard materials such as As2S3. The absence of SBS in standard and mature fabrication platforms prevents large-scale circuit integration and severely limits the potential of this technology. Notably, SBS in standard silicon nitride integration platform is currently rendered out of reach due to the lack of acoustic guiding and the material's infinitesimal photo-elastic response. In this paper, we experimentally demonstrate advanced control of backward SBS in multilayer silicon nitride waveguides. By optimizing the separation between two silicon nitride layers, we unlock gigahertz acoustic waveguiding in this platform for the first time, leading up to 15 × higher SBS gain coefficient than previously possible in silicon nitride waveguides. Using the same principle, we experimentally demonstrate on-demand inhibition of SBS by preventing acoustic guiding in the waveguide platform. We utilize the enhanced SBS gain to demonstrate a microwave photonic notch filter with high rejection (30 dB). We accomplish this in a low-loss, standard, and versatile silicon nitride integration platform without the need of suspending the SBS-active waveguide or hybrid integration with other materials.

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“…Plenty of advanced functionalities have been achieved in integrated MWP, such as tunable filters [6]- [13], delay lines and beamforming [14]- [17], RF waveform generation [18]- [21], and instantaneous frequency measurement [22], [23]. Moreover, several studies have been done to improve the figure of merit of integrated MWP system, such as improving the link gain [11], and reducing the noise figure [12], [13]. However, on-chip linearization has not been investigated deeply.…”

Section: Introductionmentioning

confidence: 99%

Integrated Microwave Photonic Spectral Shaping For Linearization and Spurious-Free Dynamic Range Enhancement

Liu

Daulay

Klaver

et al. 2021

J. Lightwave Technol.

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Integrated microwave photonics (MWP) is a fast growing area where high frequency microwave signals are processed in the optical domain, merging key advantages of both microwave photonics and photonic integrated circuits (PICs) technologies including low-loss, reconfigurability, advanced functionality, enhanced stability, and reduced footprint. Plenty of functionalities have been demonstrated in integrated MWP, especially based on spectral shaping technique, where the phase and amplitude of the optical spectrum is precisely tailored by PICs. However, on-chip linearization is lagging behind and has not been investigated deeply. It is crucial and urgent to study on-chip linearization methods, which will lead to advanced integrated MWP systems with large spurious-free dynamic range (SFDR). In this paper, we present two novel techniques for on-chip linearization of microwave photonic links. The first technique is based on line-by-line complex spectral shaping using a series of ring resonators. The second technique relies on spatial separation to achieve parallel spectral shaping in two complementary spatial channels. Both methods are demonstrated in low-loss programmable silicon nitride circuits that can already host a number of advanced functionalities. Our results point to the great potential of integrating advanced functionalities and linearization in the same integrated platform.

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On-chip programmable microwave photonic filter with an integrated optical carrier processor

Cited by 23 publications

References 20 publications

Multi-Band and Frequency-Agile Chip-Based RF Photonic Filter for Ultra-Deep Interference Rejection

Multi-Band and Frequency-Agile Chip-Based RF Photonic Filter for Ultra-Deep Interference Rejection

Guided-Acoustic Stimulated Brillouin Scattering in Silicon Nitride Photonic Circuits

Integrated Microwave Photonic Spectral Shaping For Linearization and Spurious-Free Dynamic Range Enhancement

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