Polymer waveguides for electro-optical integration in data centers and high-performance computers

Dangel, R.; Hofrichter, Jens; Horst, Folkert; Jubin, D.; Porta, Antonio La; Meier, Norbert; Soğancı, İbrahim Murat; Weiß, Jonas; Offrein, Bert Jan

doi:10.1364/oe.23.004736

Cited by 177 publications

(60 citation statements)

References 14 publications

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“…Here, a maximum on-off keying speed of only 70 kHz was reached. SOI technology also offers monolithic waveguiding, which has shown potential applications in high-level hybrid integration for cost-effective high-performance computing [22,23]. Significant advances have been made to integrate optical data communication in the past, but most of them utilized hybrid solutions for inter-chip data transfer [1,23].…”

Section: Introductionmentioning

confidence: 99%

Monolithic optical link in silicon-on-insulator CMOS technology

et al. 2017

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Abstract:This work presents a monolithic laterally-coupled wide-spectrum (350 nm < λ < 1270 nm) optical link in a silicon-on-insulator CMOS technology. The link consists of a silicon (Si) light-emitting diode (LED) as the optical source and a Si photodiode (PD) as the detector; both realized by vertical abrupt n + p junctions, separated by a shallow trench isolation composed of silicon dioxide. Medium trench isolation around the devices along with the buried oxide layer provides galvanic isolation. Optical coupling in both avalanche-mode and forward-mode operation of the LED are analyzed for various designs and bias conditions. From both DC and pulsed transient measurements, it is further shown that heating in the avalanche-mode LED leads to a slow thermal coupling to the PD with time constants in the ms range. An integrated heat sink in the same technology leads to a ∼ 6 times reduction in the change in PD junction temperature per unit electrical power dissipated in the avalanche-mode LED. The analysis paves way for wide-spectrum optical links integrated in smart power technologies.

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Section: Introductionmentioning

confidence: 99%

Monolithic optical link in silicon-on-insulator CMOS technology

et al. 2017

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“…Edge coupling is primarily preferred by research groups working on high power, broadband applications such as nonlinear signal processing. Having said that, recently a new in-plane technique based on evanescent coupling has been demonstrated by IBM Zurich in which optical mode from SOI PIC initially couples evanescently to a second chip with a polymer waveguide before being transmitted to the output fiber port [62]. This scheme promises edge-coupler like performance with much more relaxed alignment and processing requirements.…”

Section: Packaging and Testingmentioning

confidence: 99%

Grating-Assisted Fiber to Chip Coupling for SOI Photonic Circuits

2018

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Fiber to chip coupling is a critical aspect of any integrated photonic circuit. In terms of ease of fabrication as well as wafer-scale testability, surface grating couplers are by far the most preferred scheme of the coupling to integrated circuits. In the past decade, considerable effort has been made for designing efficient grating couplers on Silicon-on-Insulator (SOI) and other allied photonic platforms. Highly efficient grating couplers with sub-dB coupling performance have now been demonstrated. In this article, we review the recent advances made to develop grating coupler designs for a variety of applications on SOI platform. We begin with a basic overview of design methodology involving both shallow etched gratings and the emerging field of subwavelength gratings. The feasibility of reducing footprint by way of incorporating compact tapers is also explored. We also discuss novel grating designs like polarization diversity as well as dual band couplers. Lastly, a brief description of various packaging and wafer-scale testing schemes available for fiber-chip couplers is elaborated.

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“…Polymer waveguides are in some contexts an attractive alternative platform to SOI and InP due to their intrinsic low propagation losses in the visible and near infrared ranges, their relatively simple manufacturing procedures and their reasonable cost [7]. Nowadays, polymer based PICs are mainly being used as Mode Field Diameter (MFD) adapting interconnections between conventional inorganic densely integrated SOI PICs (small MFD) [8,9], and telecom fiber (large MFD).…”

Section: Introductionmentioning

confidence: 99%

All-organic switching polarizer based on polymer waveguides and liquid crystals

Caño‐García¹,

Elmogi²,

Mattelin³

et al. 2018

Opt. Express

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This paper reports on the design, fabrication and characterization of an all-organic photonic integrated circuit working as a switching polarizer for visible light (630nm), combining organic waveguides and liquid crystals that can be electrically driven. The device was made in commercially available epoxy by laser direct writing lithography. A device with a 2dB loss and a 20dB extinction ratio for both polarizations, was simulated; the manufactured devices proved the working principle of the design. The results have led to the design of a switching polarization splitter, in which a careful choice of waveguide material and liquid crystal can lead to devices working on a wide range of wavelengths.

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Polymer waveguides for electro-optical integration in data centers and high-performance computers

Cited by 177 publications

References 14 publications

Monolithic optical link in silicon-on-insulator CMOS technology

Monolithic optical link in silicon-on-insulator CMOS technology

Grating-Assisted Fiber to Chip Coupling for SOI Photonic Circuits

All-organic switching polarizer based on polymer waveguides and liquid crystals

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