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Ren L, Wen H, Shi L, Zhang X. Electromagnetically induced transparency with a single optomechanical microring resonator. OPTICS LETTERS 2022; 47:1363-1366. [PMID: 35290314 DOI: 10.1364/ol.454462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 02/07/2022] [Indexed: 06/14/2023]
Abstract
An all-optical realization scheme of electromagnetically induced transparency (EIT) in a single silicon optomechanical microring resonator is proposed and demonstrated. Due to the strong mechanical Kerr effect and well-designed microring resonator, two modes with a resonant frequency separation of 292 GHz (2.35 nm) can be tuned into resonance when the control power is about 4.3 µW, and the EIT spectrum is achieved. Our work provides a constructive solution for realizing EIT in a single microcavity with a low mode density. Furthermore, this device is fully integrated on-chip and compatible with current complementary metal-oxide semiconductor (CMOS) processing and has great potential in applications such as light storage, optical sensing, and quantum optics.
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Zhang Y, Zhu W, Fan P, He Y, Zhuo L, Che Z, Li D, Zheng H, Dong L, Tang J, Qiu W, Zhang J, Zhong Y, Yu J, Chen Z. A broadband and low-power light-control-light effect in a fiber-optic nano-optomechanical system. NANOSCALE 2020; 12:9800-9809. [PMID: 32328601 DOI: 10.1039/c9nr10953f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The coupling of the optical and mechanical degrees of freedom using optical force in nano-devices offers a novel mechanism to implement all-optical signal processing. However, the ultra-weak optical force requires a high pump optical power to realize all-optical processing. For such devices, it is still challenging to lower the pump power and simultaneously broaden the bandwidth of the signal light under processing. In this work, a simple and cost-effective optomechanical scheme was demonstrated that was capable of achieving a broadband (208 nm) and micro-Watt (∼624.13 μW) light-control-light effect driven by a relatively weak optical force (∼3 pN). In the scheme, a tapered nanofiber (TNF) was evanescently coupled with a substrate, allowing the pump light guided in the TNF to generate a strong transverse optical force for the light-control-light effect. Additionally, thanks to the low stiffness (5.44 fN nm-1) of the TNF, the light-control-light scheme also provided a simple method to measure the static weak optical force with a minimum detectable optical force down to 380.8 fN. The results establish TNF as a cost-effective scheme to break the limitation of the modulation wavelength bandwidth (MWB) at a low pump power and show that the TNF-optic optomechanical system can be well described as a harmonic oscillator.
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Affiliation(s)
- Yu Zhang
- Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, Department of Optoelectronic Engineering, Jinan University, Guangzhou, 510632, China.
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3
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Liu L, Liu X. All-optical tunable microwave filter with ultra-high peak rejection and low-power consumption. OPTICS EXPRESS 2020; 28:13455-13465. [PMID: 32403820 DOI: 10.1364/oe.391956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 04/14/2020] [Indexed: 06/11/2023]
Abstract
We propose and experimentally demonstrate microwave photonic filters (MPFs) with high rejection ratios and large tuning ranges of the central frequency and bandwidth leveraging four cascaded opto-mechanical microring resonators (MRRs). As half waveguides of each MRR are free-hanging in the air, the nonlinear effects in the opto-mechanical MRRs could be efficiently excited. Consequently, the transmission characteristics of the cascaded MRRs could be flexibly manipulated by adjusting the input pump powers. When the resonant wavelengths of every two MRRs are tuned to be aligned, the transmission spectrum of the silicon device is a notch bimodal distribution with high extinction ratios. The optical carrier is fixed at the flat region of the bimodal distribution. Under optical double sideband (ODSB) modulation, MPFs with high rejection ratios could be achieved due to the high extinction ratio of the cascaded rings. Moreover, the central frequency and bandwidth of the MPFs could be tuned by properly adjusting the pump powers. In the experiment, with a low power of 2.56 mW, the MPF central frequency and bandwidth could be tuned from 7.12 GHz to 39.16 GHz and from 11.3 GHz to 17.6 GHz, respectively. More importantly, the MPF rejection ratios are beyond 60 dB. Furthermore, during the bandwidth tuning process, an MPF response with approximately equiripple stopband could be realized. Owing to the dominant advantages of high rejection ratios, large tuning ranges, low power consumption and compact size, the silicon device has many significant applications in on-chip microwave systems.
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Shi Y, Zhao H, Nguyen KT, Zhang Y, Chin LK, Zhu T, Yu Y, Cai H, Yap PH, Liu PY, Xiong S, Zhang J, Qiu CW, Chan CT, Liu AQ. Nanophotonic Array-Induced Dynamic Behavior for Label-Free Shape-Selective Bacteria Sieving. ACS NANO 2019; 13:12070-12080. [PMID: 31585042 DOI: 10.1021/acsnano.9b06459] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Current particle sorting methods such as microfluidics, acoustics, and optics focus on exploiting the differences in the mass, size, refractive index, or fluorescence staining. However, there exist formidable challenges for them to sort label-free submicron particles with similar volume and refractive index yet distinct shapes. In this work, we report an optofluidic nanophotonic sawtooth array (ONSA) that generates sawtooth-like light fields through light coupling, paving the physical foundation for shape-selective sieving. Submicron particles interact with the coupled hotspots which impose different optical torques on the particles according to their shapes. Unstained S. aureus and E. coli are used as a model system to demonstrate this shape-selective sorting mechanism based on the torque-induced body dynamics, which was previously unattainable by other particle sorting technologies. More than 95% of S. aureus is retained within ONSA, while more than 97% of E. coli is removed. This nanophotonic chip offers a paradigm shift in shape-selective sorting of submicron particles and expands the boundary of optofluidics-based particle manipulation.
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Affiliation(s)
- Yuzhi Shi
- School of Electrical and Electronic Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Haitao Zhao
- School of Electrical and Electronic Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Kim Truc Nguyen
- School of Electrical and Electronic Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Yi Zhang
- School of Mechanical and Aerospace Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Lip Ket Chin
- School of Electrical and Electronic Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Tongtong Zhu
- Department of Electrical and Computer Engineering , National University of Singapore , Singapore 117583 , Singapore
- School of Optoelectronic Engineering and Instrumentation Science , Dalian University of Technology , Dalian 116024 , China
| | - Yefeng Yu
- School of Electronic and Optical Engineering , Nanjing University of Science and Technology , Nanjing , Jiangsu 210094 , China
| | - Hong Cai
- Institute of Microelectronics , A*STAR (Agency for Science, Technology and Research) , 2 Fusionopolis Way, #08-02 Innovis Tower , Singapore 138634 , Singapore
| | - Peng Huat Yap
- Lee Kong Chian School of Medicine , Nanyang Technological University , Singapore 308232 , Singapore
| | - Patricia Yang Liu
- School of Electrical and Electronic Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Sha Xiong
- School of Information Science & Engineering , Central South University , Changsha 410083 , China
| | - Jingbo Zhang
- School of Electrical and Electronic Engineering , Nanyang Technological University , Singapore 639798 , Singapore
| | - Cheng-Wei Qiu
- Department of Electrical and Computer Engineering , National University of Singapore , Singapore 117583 , Singapore
| | - Che Ting Chan
- Department of Physics and Institute for Advanced Study , The Hong Kong University of Science and Technology , Clear Water Bay , Hong Kong, China
| | - Ai Qun Liu
- School of Electrical and Electronic Engineering , Nanyang Technological University , Singapore 639798 , Singapore
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Ahmed Z, Cumberland LT, Klimov NN, Pazos IM, Tosh RE, Fitzgerald R. Assessing Radiation Hardness of Silicon Photonic Sensors. Sci Rep 2018; 8:13007. [PMID: 30158669 PMCID: PMC6115432 DOI: 10.1038/s41598-018-31286-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 08/13/2018] [Indexed: 11/09/2022] Open
Abstract
In recent years, silicon photonic platforms have undergone rapid maturation enabling not only optical communication but complex scientific experiments ranging from sensors applications to fundamental physics investigations. There is considerable interest in deploying photonics-based communication and science instruments in harsh environments such as outer space, where radiation damage is a significant concern. In this study, we have examined the impact of cobalt-60 γ-ray radiation up to 1 megagray (MGy) absorbed dose on silicon photonic devices. We do not find any systematic impact of radiation on passivated devices, indicating the durability of passivated silicon devices under harsh conditions.
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Affiliation(s)
- Zeeshan Ahmed
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Lonnie T Cumberland
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Nikolai N Klimov
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Ileana M Pazos
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Ronald E Tosh
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Ryan Fitzgerald
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, USA.
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Bogris A, Wang J, Anyfantakis M, Loppinet B, Craig SL, Butt HJ, Fytas G. Solvent-Dependent Light-Induced Structures in Gem-Dichlorocyclopropanated Polybutadiene Solutions. J Phys Chem B 2018; 122:6995-7001. [PMID: 29890076 PMCID: PMC6122843 DOI: 10.1021/acs.jpcb.8b02463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
The
formation of permanent structures upon mild red laser illumination
in transparent polydiene solutions is examined in the case of gem-dichlorocyclopropanated
polybutadiene (gDCC-PB) polymers bearing 15% functional
units of the dichlorocyclopropane groups. The response was found to
be distinct from the precursor PB. Whereas fiber-like patterns were
clearly observed in both precursor and gDCC-PB solutions
in cyclohexane, these were absent in the case of gDCC-PB/chloroform but were present in the precursor PB/chloroform
solutions. The involved mechanical stresses were not sufficient for
the gDCC activation to be detected by NMR spectroscopy.
Remarkably, addition of even 10 wt % gDCC-PB into
the latter solution sufficed to suppress the light-induced patterning.
The importance of the chemical environment on the response to light
irradiation was further checked and confirmed by use of other PB copolymers.
Different diameter patterns and kinetics were observed. The strong
solvent and comonomer mediated effect was reflected neither in solvency
nor in optical polarizability differences of the polymers solvent
couples.
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Affiliation(s)
- A Bogris
- Institute of Electronic Structure and Laser , Foundation for Research and Technology - Hellas , 70013 Heraklion , Crete , Greece.,Department of Materials Science and Technology , University of Crete , 70013 Heraklion , Crete , Greece
| | - J Wang
- Department of Chemistry , Massachusetts Institute of Technology , 77 Massachusetts Avenue , Cambridge , Massachusetts 02139 , United States
| | - M Anyfantakis
- Physics & Materials Science Research Unit , University of Luxembourg , 162a Avenue de la Faiencerie , Luxembourg L-1511 , Luxembourg
| | - B Loppinet
- Institute of Electronic Structure and Laser , Foundation for Research and Technology - Hellas , 70013 Heraklion , Crete , Greece
| | - S L Craig
- Department of Chemistry , Duke University , Durham , North Carolina 27708 , United States
| | - H-J Butt
- Max-Planck Institute for Polymer Research , 55128 Mainz , Germany
| | - G Fytas
- Institute of Electronic Structure and Laser , Foundation for Research and Technology - Hellas , 70013 Heraklion , Crete , Greece.,Max-Planck Institute for Polymer Research , 55128 Mainz , Germany
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Huang J, Karim MF, Wu J, Chen T, Liu A. Parametric Excitation of Optomechanical Resonators by Periodical Modulation. MICROMACHINES 2018; 9:mi9040193. [PMID: 30424126 PMCID: PMC6187312 DOI: 10.3390/mi9040193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 04/04/2018] [Accepted: 04/17/2018] [Indexed: 01/23/2023]
Abstract
Optical excitation of mechanical resonators has long been a research interest, since it has great applications in the physical and engineering field. Previous optomechanical methods rely on the wavelength-dependent, optical anti-damping effects, with the working range limited to the blue-detuning range. In this study, we experimentally demonstrated the excitation of optomechanical resonators by periodical modulation. The wavelength working range was extended from the blue-detuning to red-detuning range. This demonstration will provide a new way to excite mechanical resonators and benefit practical applications, such as optical mass sensors and gyroscopes with an extended working range.
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Affiliation(s)
- Jianguo Huang
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
- School of Electrical & Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore.
| | - Muhammad Faeyz Karim
- School of Electrical & Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore.
| | - Jiuhui Wu
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Tianning Chen
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Aiqun Liu
- School of Electrical & Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore.
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Liu L, Chen Z, Jin X, Yang Y, Yu Z, Zhang J, Zhang L, Wang H. Low-power all-optical microwave filter with tunable central frequency and bandwidth based on cascaded opto-mechanical microring resonators. OPTICS EXPRESS 2017; 25:17329-17342. [PMID: 28789225 DOI: 10.1364/oe.25.017329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 07/02/2017] [Indexed: 06/07/2023]
Abstract
We propose and experimentally demonstrate an all-optical microwave filter with tunable central frequency and bandwidth based on two cascaded silicon opto-mechanical microring resonators (MRRs). Due to the Vernier effect, transmission spectrum of the cascaded MRRs is a series of notch bimodal distribution. In the case of intensity modulation with optical double-sideband (ODSB) signals, the optical carrier is fixed between the two resonant peaks of one notch bimodal distribution. By injecting two pump powers to control the above two resonance red-shifts based on the nonlinear effects in opto-mechanical MRRs, the frequency intervals between the optical carrier and the two resonances could be flexibly manipulated for tunable microwave processing. In the experiment, with the highest required pump powers of 1.65 mW and 0.96 mW, the central frequency and bandwidth of the notch microwave photonic filter (MPF) could be tuned from 5 GHz to 36 GHz and 6.7 GHz to 10.3 GHz, respectively. The proposed opto-mechanical device is competent to process microwave signals with dominant advantages of all-optical control, compact footprint, wide tuning range and low-power consumption, which has significant applications in on-chip microwave systems.
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Qiu H, Dong J, Liu L, Zhang X. Energy-efficient on-chip optical diode based on the optomechanical effect. OPTICS EXPRESS 2017; 25:8975-8985. [PMID: 28437971 DOI: 10.1364/oe.25.008975] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We propose and experimentally demonstrate an energy-efficient optical diode based on the optomechanical effect. The optical signals could transmit during forward propagation while be blocked during backward propagation. When launching optical signal with a low power of 4.0 mW, the maximum resonance red-shift of the asymmetric silicon microring resonator (MRR) could be up to 0.74 nm, in this case, a forward-backward nonreciprocal transmission ratio (NTR) of 12.7 dB has been achieved. The 10-dB and 5-dB operation bandwidths are 0.08 nm and 0.24 nm, respectively. The operating bandwidth could be continuously tuned theoretically by changing the input power.
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Zhang J, MacDonald KF, Zheludev NI. Giant optical forces in planar dielectric photonic metamaterials. OPTICS LETTERS 2014; 39:4883-4886. [PMID: 25121899 DOI: 10.1364/ol.39.004883] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We demonstrate that resonant optical forces generated within all-dielectric planar photonic metamaterials at near-infrared illumination wavelengths can be an order of magnitude larger than in corresponding plasmonic metamaterials, reaching levels many tens of times greater than the force resulting from radiation pressure. This is made possible by the dielectric structures' freedom from Joule losses and the consequent ability to sustain Fano-resonances with high quality factors that are unachievable in plasmonic nanostructures. Dielectric nano-optomechanical metamaterials can thus provide a functional platform for a range of novel dynamically controlled and self-adaptive nonlinear, tunable/switchable photonic metamaterials.
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