A Continuously Tunable Sub-Gigahertz Microwave Photonic Bandpass Filter Based on an Ultra-High-Q Silicon Microring Resonator

Qiu, Huaqing; Zhou, Feng; Qie, Jinran; Yao, Yuhan; Hu, Xiao; Zhang, Yuguang; Xiao, Xi; Yu, Yuan; Dong, Jianji; Zhang, Chi

doi:10.1109/jlt.2018.2822829

Cited by 101 publications

(55 citation statements)

References 39 publications

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“…We compared the performance of our proposed IMPBPF to previously reported techniques in terms of RF gain, FWHM, and gain to FWHM ratio, as shown in Table 1. In terms of the RF gain, our MPBPF shows a significant advantage over other reported work, increasing to 1.8 dB from −54.5 dB [5,[7][8][9][10][11]25]. In contrast to SOI-based MPBPFs [5,7,8], the resolution of our filter exhibits an improvement of at least one order of magnitude.…”

Section: Discussionmentioning

confidence: 61%

“…Where a is the single-pass amplitude transmission, including both propagation loss in the ring and loss in the coupler, r is the self-coupling coefficient. Combined with the transfer function of the PM, the photocurrent at the output of the photodiode can be written as [9]…”

Section: Mpbpf With One Ring Resonatormentioning

confidence: 99%

“…Integrated microwave photonic bandpass filters (IMPBPFs) have been implemented using ring resonator based optical filter [5][6][7][8][9][10][11], on-chip Bragg gratings [12][13], multi-tap finite impulse response (FIR) [14][15], and stimulated Brillouin scattering (SBS) based selective sideband amplification [16][17]. Integrated ring resonators enable the implementation of IMPBPFs in a passive and potentially compact form, allowing multiple resonators to be cascaded on a single bus waveguide to expand the functionality [9,11]. In [5][6], the combined use of an intensity modulator and a ring resonator based on one-to-one spectrum mapping from the optical filter response to RF domain was demonstrated.…”

Section: Introductionmentioning

confidence: 99%

“…However, it was difficult to achieve high extinction ratio using intensity-modulator-based scheme. In order to improve the extinction ratio, phase-modulator-based ring resonator approaches using RF interference cancellation was reported [7][8][9][10][11]. In [7][8][9][10], an MPBPF using a silicon-on-insulator (SOI) ring resonator as an optical notch filter to achieve phase modulation to intensity modulation conversion was proposed.…”

Section: Introductionmentioning

confidence: 99%

“…In order to improve the extinction ratio, phase-modulator-based ring resonator approaches using RF interference cancellation was reported [7][8][9][10][11]. In [7][8][9][10], an MPBPF using a silicon-on-insulator (SOI) ring resonator as an optical notch filter to achieve phase modulation to intensity modulation conversion was proposed. Compared with the above-mentioned silicon ring resonators with a typical linewidth of tens of GHz or several GHz, the silicon nitride (Si 3 N 4 ) platform is able to offer narrower linewidth in sub-GHz level due to the lower waveguide loss [18].…”

Section: Introductionmentioning

confidence: 99%

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Positive link gain microwave photonic bandpass filter using Si₃N₄-ring-enabled sideband filtering and carrier suppression

et al. 2019

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Microwave photonic bandpass filters (MPBPFs) are important building blocks in radio-frequency (RF) signal processing systems. However, most of the reported MPBPFs fail to satisfy the stringent real-world performance metrics, particularly low RF insertion loss. In this paper we report a novel MPBPF scheme using two cascaded integrated silicon nitride (Si 3 N 4 ) ring resonators, achieving a high link gain in the RF filter passband. In this scheme, one ring operates at an optimal over-coupling condition to enable a strong RF passband whilst an auxiliary ring is used to increase the detected RF signal power via tuning the optical carrier-to-sideband ratio. The unique combination of these two techniques enables compact size as well as high RF performance. Compared to previously reported ring-based MPBPFs, this work achieves a record-high RF gain of 1.8 dB in the passband, with a high spectral resolution of 260 MHz. Furthermore, a multi-band MPBPF with optimized RF gain, tunable central frequencies, and frequency spacing tunability is realized using additional ring resonators, highlighting the scalability and flexibility of this chip-based MPBPF scheme.

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Section: Discussionmentioning

confidence: 61%

Section: Mpbpf With One Ring Resonatormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Positive link gain microwave photonic bandpass filter using Si₃N₄-ring-enabled sideband filtering and carrier suppression

et al. 2019

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Silicon Photonic Filters: A Pathway from Basics to Applications

Saha,

Brunetti,

di Toma

et al. 2024

Advanced Photonics Research

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Silicon photonics has found a profound place among emerging technologies in the past few decades due to several advantages. Due to a series of breakthroughs and increased funding from private and government sectors, the development of silicon photonics has accelerated especially starting from the two years 2004–2005 with a persisting and ever‐growing momentum. Among various components, the silicon photonic filters that selectively pass or block particular wavelengths with a finite bandwidth have found particular interest as they are useful in signal processing in different fields ranging from optical communication to microwave photonics and quantum photonics. Herein, a comprehensive review of silicon photonic filters focusing on the four most commonly used architectures, such as microring resonators, waveguide Bragg grating, Mach–Zehnder interferometers, and arrayed waveguide grating, encapsulating basics, and guidelines, in terms of simulating tools and topologies, of realizing reconfigurable and high‐performing filters for several applications, is provided. The novelty of this review relies on the fact that it summarizes these filter architectures covering a broad range of applications concisely and constructively and includes the basics, growth, and future trends, providing a clear understanding and importance of silicon photonic filters from research to commercialization perspective.

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Exploiting Ultralow Loss Multimode Waveguides for Broadband Frequency Combs

Jang

Dave

et al. 2020

Laser & Photonics Reviews

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Low propagation loss in high confinement waveguides is critical for chip-based nonlinear photonics applications. Sophisticated fabrication processes which yield sub-nm roughness are generally needed to reduce scattering points at the waveguide interfaces in order to achieve ultralow propagation loss. Here, we show ultralow propagation loss by shaping the mode using a highly multimode structure to reduce its overlap with the waveguide interfaces, thus relaxing the fabrication processing requirements. Microresonators with intrinsic quality factors (Q) of 31.8 ± 4.4 million are experimentally demonstrated. Although the microresonators support 10 transverse modes only the fundamental mode is excited and no higher order modes are observed when using nonlinear adiabatic bends. A record-low threshold pump power of 73 µW for parametric oscillation is measured and a broadband, almost octave spanning single-soliton frequency comb without any signatures of higher order modes in the spectrum spanning from 1097 nm to 2040 nm (126 THz) is generated in the multimode microresonator. This work provides a design method that could be applied to different material platforms to achieve and use ultrahigh-Q multimode microresonators.

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A Continuously Tunable Sub-Gigahertz Microwave Photonic Bandpass Filter Based on an Ultra-High-Q Silicon Microring Resonator

Cited by 101 publications

References 39 publications

Positive link gain microwave photonic bandpass filter using Si₃N₄-ring-enabled sideband filtering and carrier suppression

Positive link gain microwave photonic bandpass filter using Si₃N₄-ring-enabled sideband filtering and carrier suppression

Silicon Photonic Filters: A Pathway from Basics to Applications

Exploiting Ultralow Loss Multimode Waveguides for Broadband Frequency Combs

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A Continuously Tunable Sub-Gigahertz Microwave Photonic Bandpass Filter Based on an Ultra-High-Q Silicon Microring Resonator

Cited by 101 publications

References 39 publications

Positive link gain microwave photonic bandpass filter using Si3N4-ring-enabled sideband filtering and carrier suppression

Positive link gain microwave photonic bandpass filter using Si3N4-ring-enabled sideband filtering and carrier suppression

Silicon Photonic Filters: A Pathway from Basics to Applications

Exploiting Ultralow Loss Multimode Waveguides for Broadband Frequency Combs

Contact Info

Product

Resources

About

Positive link gain microwave photonic bandpass filter using Si₃N₄-ring-enabled sideband filtering and carrier suppression

Positive link gain microwave photonic bandpass filter using Si₃N₄-ring-enabled sideband filtering and carrier suppression