Design of a single all-silicon ring resonator with a 150  nm free spectral range and a 100  nm tuning range around 1550  nm

Li, Ang; Huang, Qiangsheng; Bogaerts, Wim

doi:10.1364/prj.4.000084

Cited by 25 publications

(17 citation statements)

References 19 publications

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“…As evident, by injecting current, under some condition all of the resonance shapes become non-split and the extinction ratio increases dramatically compared to the original split resonance. This is because the extinction ratio gets suppressed by reflection inside the ring [12]. We also characterized how the unwanted transmission at in and add ports will be influenced.…”

Section: Experiments Resultsmentioning

confidence: 99%

“…Also, the resonance splitting can be asymmetric; the reason for this is proven to be the backcoupling of the directional couplers [10]. Moreover, we have also proven that the reflection will dramatically decrease the extinction ratio of the ring resonator if its resonance is close to the critical coupling condition [12]. Due to the degradation of the resonance, many ring resonator based applications will suffer from this effect.…”

Section: Introductionmentioning

confidence: 93%

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Fundamental suppression of backscattering in silicon microrings

Li¹,

Bogaerts²

2017

Opt. Express

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Abstract:In this paper we theoretically prove and experimentally demonstrate a novel approach to eliminate the effects of backscattering in silicon ring resonators. Not only the resonancesplitting can be completely suppressed, but also the unwanted light reflected to the in port and directed to the add port can be dramatically reduced. Ring resonators have become one of the most intensively used integrated optical components for various applications. However, in high-index-contrast platforms like silicon photonics, sidewall roughness induced backscattering imposes limits on the performance of ring resonators. It frequently induces resonance-splitting in through and drop ports. At the same time, there will be unwanted light directed to the add port and reflected to the in port. We show that, by putting an intentional tunable reflector inside the ring to compete with the stochastic backscattering, the ring can work under a normal condition. All resonances can be tuned to be non-split with an improved extinction ratio and there will be significantly less light coming out from the in and the add ports.

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Section: Experiments Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 93%

Fundamental suppression of backscattering in silicon microrings

Li¹,

Bogaerts²

2017

Opt. Express

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“…Details about such a reflector can be found in Ref. [24]. In short, the reflector consists of a tunable MZI loop mirror, where a 0.5π phase change can manipulate the reflectivity from 0 to 100%.…”

Section: Circuit Design and Simulationmentioning

confidence: 99%

Backcoupling manipulation in silicon ring resonators

Li¹,

Bogaerts²

2018

Photon. Res.

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In this paper, we theoretically propose and experimentally demonstrate the manipulation of a novel degree of freedom in ring resonators, which is the coupling from the clockwise input to the counterclockwise propagating mode (and vice versa). We name this mechanism backcoupling, in contrast with the normal forward-coupling of a directional coupler. It is well known that internal reflections will cause peak splitting in a ring resonator. Our previous research demonstrated that the peak asymmetry will be strongly influenced by the backcoupling. Thus, it is worth manipulating the backcoupling in order to gain full control of a split resonance for the benefit of various resonance-splitting-based applications. While it is difficult to directly manipulate the backcoupling of a conventional directional coupler, here we design a circuit explicitly for manipulating the backcoupling. It can be potentially developed for applications such as single sideband filter, resonance splitting elimination, Fano resonance, and ultrahigh-Q and finesse.

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“…In order to investigate the reasons for VCSL cutting off periodically, the FSR can also be calculated as [22] FSR ¼ c nL ;…”

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confidence: 99%

Resonator integrated optic gyro based on multilevel laser frequency lock-in technique

Pan¹,

Zhang²,

Xie³

et al. 2018

Chin. Opt. Lett.

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The resonator integrated optic gyros (RIOGs) based on the Sagnac effect have gained extensive attention in navigation and guidance systems due to their predominant advantages: high theoretical accuracy and simple integration. However, the problems of losing lock and low lock-in accuracy are the bottlenecks, which restrict the development of digital RIOGs. Therefore, a multilevel laser frequency lock-in technique has been proposed in this Letter to address these problems. The experimental results show that lock-in accuracy can be improved one order higher and without losing lock in a variable temperature environment. Then, a digital miniaturized RIOG prototype (18 cm × 18 cm × 20 cm) has been produced, and long-term (1 h) bias stability of 26.6 deg/h is successfully demonstrated.

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Design of a single all-silicon ring resonator with a 150 nm free spectral range and a 100 nm tuning range around 1550 nm

Cited by 25 publications

References 19 publications

Fundamental suppression of backscattering in silicon microrings

Fundamental suppression of backscattering in silicon microrings

Backcoupling manipulation in silicon ring resonators

Resonator integrated optic gyro based on multilevel laser frequency lock-in technique

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