Broadband optical single sideband generation using an ultra high shape-factor self coupled ring resonator

Pandey, Awanish; Jeyaselvan, Vadivukkarasi; Selvaraja, Shankar Kumar

doi:10.1016/j.optcom.2019.125224

Cited by 3 publications

(2 citation statements)

References 20 publications

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“…As a key device of photon integrated circuits (PICS), the microring resonator (MRR) [1,2] shows excellent performance in filtering [3], sensing [4,5], high-speed electric-optical modulation [6,7], generation of optical frequency comb [8], and wavelength division multiplex (EDM) [9,10] due to its unique properties, such as wavelength selectivity, compactness, and high Q-factor. Over the past few decades, electro-optic modulator (EOM) composed of MRR has been extensively studied in various material systems, including graphene [11], silicon (Si) [12], lithium niobate (LN) [13,14], indium phosphide (InP), and polymers [15].…”

Section: Introductionmentioning

confidence: 99%

Investigation of High-Q Lithium Niobate-Based Double Ring Resonator Used in RF Signal Modulation

Zhang

Han

et al. 2023

Applied Sciences

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In recent years, millimeter-wave communication has played a crucial role in satellite communication, 5G, and even 6G applications. The millimeter-wave electro-optic modulator is capable of receiving and processing millimeter-wave signals effectively. However, the large attenuation of millimeter waves in the air remains a primary limiting factor for their future applications. Therefore, finding a waveguide structure with a high quality factor (Q-factor) is critical for millimeter-wave electro-optic modulators. This manuscript presents the demonstration of a double ring modulator made of lithium niobate with the specific goal of modulating an RF signal at approximately 35 GHz. By optimizing the microring structure, the double ring resonator with high Q-factor is studied to obtain high sensitivity modulation of the RF signal. This manuscript employs the transfer matrix method to investigate the operational principles of the double ring structure and conducts simulations to explore the influence of structural parameters on its performance. Through a comparison with the traditional single ring structure, it is observed that the Q-factor of the double ring modulator can reach 7.05 × 108, which is two orders of magnitude greater than that of the single ring structure. Meanwhile, the electro-optical tunability of the double ring modulator is 6 pm/V with a bandwidth of 2.4 pm, which only needs 0.4 V driving voltage. The high Q double ring structure proposed in this study has potential applications not only in the field of communication but also as a promising candidate for a variety of chemical and biomedical sensing applications.

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Section: Introductionmentioning

confidence: 99%

Investigation of High-Q Lithium Niobate-Based Double Ring Resonator Used in RF Signal Modulation

Zhang

Han

et al. 2023

Applied Sciences

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“…The resonant nature of MRMs allows for a considerable amount of enhancement in modulation strength and equips the system with enhanced degrees of freedom to engineer their response by either coupling to different resonators or coupling to additional waveguides. Given their versatility, MRMs have already been used for several applications like wavelength division multiplexing for optical interconnection, radio over fiber, and frequency comb generation. − There has also been a theoretical proposal to utilize MRMs for lossless frequency conversion where the optical carrier can be completely converted into sideband frequencies . More recently MRMs were also proposed as a route toward realizing an optical isolator .…”

Section: Introductionmentioning

confidence: 99%

Nonreciprocal Light Propagation in a Cascaded All-Silicon Microring Modulator

et al. 2021

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Optical isolators and circulators are critical building blocks for large-scale photonic integrated circuits. Among the several methods proposed to realize such nonreciprocal devices, including heterogeneous integration with garnet-based materials or using nonlinearities, dynamic modulation of the waveguide properties is a potentially practical and easily accessible method. However, most proposals relying on this method rely on modulators with a very large footprint, limiting their practical applicability. This paper overcomes this issue by presenting a method to achieve nonreciprocal optical transmission taking advantage of compact ring modulators. We use a cascaded system of microring modulators with a footprint as small as 15 μm × 220 μm and propose that, by tuning the relative time delay between the RF driving signals and the optical delay between the modulators, nonreciprocal transmission can be achieved. We present a detailed theoretical analysis of our design and investigate the origin of the asymmetric transmission. The modulators were designed and fabricated on IMEC's Silicon-on-Insulator platform iSiPP50G. We achieve a 16 dB difference between forward and backward optical signals at a driving voltage (V pp ) of 8 V at 6 GHz. Moreover, we analyze the impact of fabrication imperfections on the device performance. Our work leads to a significant reduction in device footprint compared to formerly explored solutions using dynamic modulation and is well suited for monolithic integration with photonic integrated circuits.

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Broadband integrated optical modulators: achievements and prospects

Петров¹,

Agruzov²,

Лебедев³

et al. 2021

Phys.-Usp.

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Broadband integrated optical modulators are key elements of modern optical information systems. The three main technological material platforms for their manufacture are considered: lithium niobate, III–V semiconductors, and silicon. Progress achieved in the development of integrated optical modulators is analyzed, and the main parameters of modulators obtained for various materials are compared with requirements for practical applications. Directions in the further development of the technology of modulators related to new problems in optical information systems are discussed.

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Broadband optical single sideband generation using an ultra high shape-factor self coupled ring resonator

Cited by 3 publications

References 20 publications

Investigation of High-Q Lithium Niobate-Based Double Ring Resonator Used in RF Signal Modulation

Investigation of High-Q Lithium Niobate-Based Double Ring Resonator Used in RF Signal Modulation

Nonreciprocal Light Propagation in a Cascaded All-Silicon Microring Modulator

Broadband integrated optical modulators: achievements and prospects

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