On-Chip All-Optical Tunable Filter With High Tuning Efficiency

Chen, Miaomiao; Liu, Li; Xu, Linghuan; Ye, Mengyuan; Jin, Xing; Yu, Zhihua

doi:10.1109/jphot.2020.2979246

Cited by 8 publications

(5 citation statements)

References 38 publications

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“…In this device, continuous resonant wavelength tuning across a 450 pm range using a mW level optical pump was achieved, exploiting the thermo-optic effect in silicon. Another experimental attempt with quite a similar tuning efficiency though on a shorter range and with a slightly complex structure based on double opto-mechanical microring resonators assisted Mach-Zehnder interferometer structure is reported with a tuning efficiency of 0.277 nm/mW, from 1550.09 nm to 1550.60 nm with a small passband ripple of 1 dB [16]. In that line, combined electro-mechanical and thermo-optic effects in a silicon opto-mechanical microring resonator (MRR)-based microwave filter experimentally demonstrated a continuous tunability of the central frequency on a range of 13 GHz (0.1 nm) with pump power lower than −2.5 dBm (0.56 mW) [42].…”

Section: Resultsmentioning

confidence: 82%

“…Different tuning methods change the refractive index exploiting various phenomena in the material including thermo-optic [9,10], electro-optic [11][12][13][14][15], and all-optical effects [7,8,16]. Thermally tuned silicon photonic devices exploiting the high thermo-optic coefficient (1.8 × 10 −4 /K) and two-photon absorption nonlinearities in the silicon experience limited tuning speed and high power consumption [17].…”

Section: Introductionmentioning

confidence: 99%

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Ultra-Low Power All-Optically Tuned Hybrid Graphene Ultra Silicon-Rich Nitride Ring Resonator-Based Add-Drop Filter for DWDM Systems

Rukerandanga¹,

Musyoki

Ataro

2022

Optics

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This research work conducted a design and simulation of an ultra-low power all-optically tuned nonlinear ring resonator-based add-drop filter. The purpose of this study is to investigate a CMOS-compatible nonlinear material system for an optical filter with temperature resilience, polarization insensitivity, and fast and energy-efficient tunability. The all-optical tunability was achieved using an optical pump that photo-excites the high nonlinear Kerr effect in the device material system. A three-dimensional multiphysics approach was used, combining the electromagnetics and thermo-structural effects in the filter. Hybrid graphene on an ultra-rich silicon nitride ring resonator-based filter enabled the realization of an ultra-high tuning efficiency (0.275 nm/mW for TE mode and 0.253 nm/mW for TM mode) on a range of 1.55 nm and thermal stability of 0.11 pm/K. This work contributed to the existing literature by proposing (1) the integration of a high Kerr effect layer on a low loss, high index contrast, and two-photon absorption-free core material with an athermal cladding material system and (2) the use of a cross-section shape insensitive to polarization. Moreover, the tuning mechanism contributed to the realization of an all-optical on-chip integrable filter for Dense Wavelength Division Multiplexing systems in the less occupied L band.

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Section: Resultsmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Ultra-Low Power All-Optically Tuned Hybrid Graphene Ultra Silicon-Rich Nitride Ring Resonator-Based Add-Drop Filter for DWDM Systems

Rukerandanga¹,

Musyoki

Ataro

2022

Optics

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show abstract

“…On the other hand, the air hole positions of the PC cavity could be optimized to further increase the cavity Q factor and tuning efficiency [33][34][35][36]. Once the cavity Q factor is improved [37][38][39][40][41], the power consumption of the silicon device could be significantly reduced [42][43][44][45]. This article has been accepted for publication in a future issue of this journal, but has not been fully edited.…”

Section: Resultsmentioning

confidence: 99%

Instantaneous Microwave Frequency Measurement Based on Two Cascaded Photonic Crystal Nanocavities

Liu

Xue

2020

IEEE Photonics J.

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We propose and experimentally demonstrate a photonic-assist measurement of microwave frequency by utilizing two cascaded photonic crystal (PC) cavities. By injecting different powers into the PC cavities, the device transmission spectra could be effectively manipulated. Consequently, the central frequencies of the microwave photonic filters (MPFs) can be flexibly adjusted. By utilizing the different MPF responses, adjustable amplitude comparison functions (ACFs) could be constructed. As the mapping relationships between the ACF ratios and the microwave frequencies are unique, the frequency with dynamic ranges could be measured according to the adjustable ACFs. The experimental results show that the measurement range of the microwave frequency is from 9 GHz to 19 GHz and the largest measurement errors are lower than 0.15 GHz. More importantly, the required optical power to manipulate the nanocavities is highly energy-efficient for on-chip nonlinear effect-based microwave measurements. The energy-efficient silicon device with compact size and low power is significant for dynamic frequency measurements in onchip microwave systems.

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“…As shown in Fig. 1(a), optical gradient force would be generated [36]- [38], due to the enhanced interaction of evanescent waves between the suspended MRR arc and the oxide substrate. Fig.…”

Section: Operation Principlementioning

confidence: 99%

All-Silicon Energy-Efficient Optical Diode Using Opto-Mechanical Microring Resonators

Liu

Chen

et al. 2020

IEEE Photonics J.

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By utilizing two cascaded all-silicon opto-mechanical microring resonators (MRRs), an energy-efficient optical diode with high nonreciprocal transmission ratios (NTRs) is proposed and experimentally realized. The optical diode is composed of an allpass opto-mechanical MRR and an add-drop opto-mechanical MRR. Due to the largely enhanced interaction between the photons and the suspended structure, the opto-mechanical effect can be dramatically improved. With injecting low optical powers, the optical gradient force can be effectively aroused in the opto-mechanical MRRs, which would arise nanometer scale waveguide deformations and the significant spectrum red-shifts of the rings. The opto-mechanical effect would cause different red-shifts of the two MRR resonances in the forward and backward transmissions, which contributes to realizing the nonreciprocal transmissions. The experimental results show that with −4.2 dBm power consumption, the optical diode can achieve high NTRs approach 41.8 dB. Due to the dominant advantages of complementary metal oxide semiconductor (COMS) compatibility, high NTRs (41.8 dB), low power consumption (−4.2 dBm) and compact size (0.015 mm 2), the device has remarkable applications in on-chip signal processing systems.

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On-Chip All-Optical Tunable Filter With High Tuning Efficiency

Cited by 8 publications

References 38 publications

Ultra-Low Power All-Optically Tuned Hybrid Graphene Ultra Silicon-Rich Nitride Ring Resonator-Based Add-Drop Filter for DWDM Systems

Ultra-Low Power All-Optically Tuned Hybrid Graphene Ultra Silicon-Rich Nitride Ring Resonator-Based Add-Drop Filter for DWDM Systems

Instantaneous Microwave Frequency Measurement Based on Two Cascaded Photonic Crystal Nanocavities

All-Silicon Energy-Efficient Optical Diode Using Opto-Mechanical Microring Resonators

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