Energy-efficient on-chip optical diode based on the optomechanical effect

Qiu, Huaqing; Dong, Jianji; Liu, Li; Zhang, Chi

doi:10.1364/oe.25.008975

Cited by 28 publications

(19 citation statements)

References 25 publications

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“…In this paper, we propose the creation of optical nonreciprocity in a three-mode optomechanical system based on the optomechanical induced nonlinearity [29][30][31]. Different from the previous works [29][30][31], here the setup consists of one mechanical and two optical (cavity) modes, and the mechanical mode is coupled with only one of the optical modes. Interestingly, we find that the nonlinearity is a necessary but not a sufficient condition for observing nonreciprocity.…”

Section: Introductionmentioning

confidence: 99%

Optomechanically induced nonreciprocity in a three-mode optomechanical system

Song

Zheng

et al. 2018

Phys. Rev. A

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We propose to create optical nonreciprocity in a three-mode optomechanical system comprising one mechanical and two optical modes, where the mechanical mode is coupled with only one of the optical modes. The optical nonreciprocal response of the system is based on the nonlinearity induced by the optomechanical interaction. However, nonlinearity is a necessary but not a sufficient condition for observing nonreciprocity. Another necessary condition for nonreciprocal response of the system to a classical driving field is demonstrated analytically. The effects of the parameters on the nonreciprocal response of the system are discussed numerically. The three-mode optomechanical system provides a platform to realize nonreciprocity for strong optical signal fields.

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Section: Introductionmentioning

confidence: 99%

Optomechanically induced nonreciprocity in a three-mode optomechanical system

Song

Zheng

et al. 2018

Phys. Rev. A

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“…We have fabricated some opto-mechanical MRRs [37], [38] and experimentally demonstrated the opto-mechanical effect in Ref. [30]. The measured tuning characteristics of the opto-mechanical MRR are competent to realize the proposed optical filter with high tuning efficiencies.…”

Section: Device Structure and Resultsmentioning

confidence: 96%

“…The change of coupling coefficient and the light-matter interaction between the straight waveguide and the MRR, or between the straight waveguide and the substrate could be ignored. Firstly, our previous experimental results demonstrate that the optical force between the MRR and the substrate dominates the device operation mechanism [30]. Namely, the optical force between the MRR and the straight waveguide could be ignored.…”

Section: Operation Principlementioning

confidence: 99%

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

Chen

Liu

et al. 2020

IEEE Photonics J.

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We propose and realize a bandwidth and wavelength-tunable all-optical filter with high tuning efficiency based on double opto-mechanical microring resonators (MRRs) assisted Mach-Zehnder interferometer (MZI) structure, which is beneficial to achieve high extinction ratio and shape factor. As the optical field gradient is largely enhanced in the free-hanging MRRs, the opto-mechanical effect could be excited by low power consumption. By injecting the corresponding low resonance powers, the drop transmission of each MRR could be flexibly tuned based on the opto-mechanical effect. Consequently, the synthetic transmission of the microring-assisted MZI could be efficiently manipulated. The results show that by injecting pump powers of 0.40 mW and 1.84 mW, the bandwidth and wavelength of the all-optical filter could be tuned from 0.17 nm to 0.30 nm, and from 1550.09 nm to 1550.60 nm respectively with maintaining a high extinction ratio of 38 dB and a small passband ripple of 1 dB. Especially, the tuning efficiencies of bandwidth and wavelength could realize up to 0.325 nm/mW and 0.277 nm/mW, respectively. The proposed optical filter has dominant advantages of high tuning efficiencies and extinction ratios, small passband ripple and compact footprint, which has significant applications in on-chip all-optical systems.

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“…Especially in the compact opto-mechanical microring resonators (MRRs), the nonlinear effects (mainly including the opto-mechanical effect and thermo-optic effect) could be significantly activated by low input powers. Due to the enhanced gradient of the optical field, the opto-mechanical effect could be effectively excited in the free-hanging MRRs [23], [24]. On the other hand, the thermo-optic effect is also one key factor to induce the MRR resonance red-shifts [25].…”

Section: Introductionmentioning

confidence: 99%

On-Chip Low-Power Gray Code Generation Based on Opto-Mechanical Microring Resonators

Liu

Yue

et al. 2020

IEEE Photonics J.

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We propose and experimentally demonstrate on-chip energy-efficient Gray code generation based on a scalable and compact optical encoder. The operation principle of the integrated encoder is based on the nonlinear effects in silicon opto-mechanical microring resonators (MRRs), which could be excited by ultra-low input powers. By adjusting the input powers with hierarchical power levels, the red-shifts of the MRR transmission spectrum could be flexibly manipulated. In this case, the output powers of the MRR drop-port and through-port could be controllable and switchable to generate different codes. Through tuning the optical encoding powers in a specific rule, 4-bit and 2-bit Gray codes have been successfully demonstrated. The required power of the proposed 4-bit encoder is as low as −6 dBm, which is favorable to build energy-efficient optical encoding systems. To the best of our knowledge, we have realized a nano-mechanical optical encoder with the lowest required power. Moreover, the encoder structure has great scalability, thus 2N-bit Gray code could be generated by utilizing 2N-1 add-drop MRRs. With the dominant advantages of ultra-low power consumption (−6 dBm), compact size (0.08 mm 2) and great scalability, the proposed optical encoder has many significant applications in optical encoding and communication chips.

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Energy-efficient on-chip optical diode based on the optomechanical effect

Cited by 28 publications

References 25 publications

Optomechanically induced nonreciprocity in a three-mode optomechanical system

Optomechanically induced nonreciprocity in a three-mode optomechanical system

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

On-Chip Low-Power Gray Code Generation Based on Opto-Mechanical Microring Resonators

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