Optical Modulators based on depletion width translation in semiconductor microdisk resonators

Sadagopan, T.; Choi, Sang Jun; Dapkus, P.D.; Bond, A.E.

doi:10.1109/lpt.2004.842365

Cited by 18 publications

(6 citation statements)

References 9 publications

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“…This approach is very important for immunization of electronic systems against microwave based directed energy weapons that can damage metal interconnects as the "soft spots" in a conventional receiver front-ends 36,37 . Shortly after the development of LiNbO 3 microdisk WGM modulator, monolithic polymer 11 and semiconductor based microring modulator were demonstrated 12,13 . The polymer microring modulator uses the large electro-optic activity of novel polymer materials and the semiconductor microring/microdisk modulators use various effects in silicon or IIIV semicoductors to modulate the resonant optical frequency.…”

Section: MMmentioning

confidence: 99%

“…In early 2000 a new class of resonant optical modulators based on crystalline Whispering-Gallery Mode (WGM) optical cavities 5,6 was introduced and investigated 7-10 . In a short period of time monolithic microdisk and microring electrooptical modulators based on a variety of material systems emerged from the original idea [11][12][13] . The original WGM microdisk modulator was significantly smaller and more efficient than the conventional Mach-Zhender modulator; however its modulation frequency was limited to a relatively small bandwidth around a large (microwave/mm-wave) center frequency.…”

Section: Introductionmentioning

confidence: 99%

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Photonic microwave receivers based on high-Q optical resonance

Hossein‐Zadeh¹

2012

SPIE Proceedings

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The quest for low power and high frequency electro-optical modulator has been one of the important endeavors in microwave photonics. The advent of microdisk electro-optic modulator created a new domain in optical modulator and photonic microwave receiver design by exploiting the unique properties of high quality (high-Q) Whispering-Gallery Mode (WGM) optical cavities. High-Q crystalline WG cavities were the first devices used as compact and low power resonant electro-optical modulators and gradually semiconductor and polymer based microdisk and microring modulators emerged from this core technology. Due to its small size, high sensitivity and limited bandwidth, originally microdisk modulator was developed with the objective of replacing the conventional microwave wireless receiver frontend with a sensitive photonic front-end. Later it was shown that the electro-optic microdisk modulator could also function as a microwave frequency mixer in optical domain. Starting from fundamentals of resonant electro-optic modulation in high-Q WGM cavities, in this paper we review the development of high sensitivity microdisk modulators and the recent progress toward more efficient modulation at higher frequencies. Next related topics such as singlesideband modulation, all-dielectric photonic receiver, and semiconductor microring modulators are briefly discussed. Finally, photonic microwave receiver configurations that employ high-Q optical resonance for modulation, filtering and mixing are presented. We will show that high-Q optical resonance is one of the promising routes toward the general idea of an all-optical microwave receiver free of high frequency electronic transistors, mixers and filters.

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Section: MMmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photonic microwave receivers based on high-Q optical resonance

Hossein‐Zadeh¹

2012

SPIE Proceedings

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“…Many of these components have been realized in the optical domain using different approaches and technologies, e.g. [1], [2]. Power consumption is becoming a serious issue and hence there is a need for low power all-optical components and devices which are ever faster and smaller.…”

Section: Introductionmentioning

confidence: 99%

10-GHz All-Optical Gate Based on a III–V/SOI Microdisk

Kumar

Liu

Roelkens

et al. 2010

IEEE Photon. Technol. Lett.

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Abstract-We demonstrate an ultra-fast and low power all-optical gate in pump-probe configuration based on free carrier induced refractive index modulation in a 5µm radius InP/InGaAsP microdisk heterogeneously integrated onto an SOI waveguide circuit. High speed gating is obtained by extracting the carriers from the microdisk active layer by applying a reverse bias. Measured transient responses show that this gate is capable of working up to 20GHz.Index Terms-Microdisk, Optical gate, SOI.

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“…Optical microring resonators (OMRs) are versatile elements for designing integrated photonic circuits, and can be used as building blocks for many optical signal processing devices and systems. It has been shown that OMRs can be employed in multipole add-drop filters [1][2][3][4], multistage dispersion compensators and delay lines [5][6][7], electro-optic modulators [8,9], lasers [10,11], nonlinear optical elements [12,13], and sensor applications [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Free ultra-high-Q microtoroid: a tool for designing photonic devices

Hossein‐Zadeh

Vahala

2007

Opt. Express

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Abstract:We describe techniques that enable fabrication of a new class of photonic devices based on free UH-Q microresonators. Preliminary results show that free silica microtoroids with Qs above 30 million can be fabricated and transferred to different platforms for integration with a variety of photonic devices. Greene, " Ultra-compact Si-SiO2 microring resonator optical channel dropping filters," IEEE Photon. Technol. Lett. 10, 549-551 (1998). 18. T. Baehr-Jones, M. Hochberg, C. Walker, A. Scherer, "High-Q ring resonators in thin silicon-oninsulator," Appl. Phys. Lett. 85, 3346-3347 (2004

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Optical Modulators based on depletion width translation in semiconductor microdisk resonators

Cited by 18 publications

References 9 publications

Photonic microwave receivers based on high-Q optical resonance

Photonic microwave receivers based on high-Q optical resonance

10-GHz All-Optical Gate Based on a III–V/SOI Microdisk

Free ultra-high-Q microtoroid: a tool for designing photonic devices

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