Monolithic integration of a silica AWG and Ge photodiodes on Si photonic platform for one-chip WDM receiver

Nishi, Hidetaka; Tsuchizawa, Tai; Kou, Rai; Satō, Hiroyuki; Yamada, Takashi; Kimura, Hirokazu; Ishikawa, Yasuhiko; Wada, Kazumi; Yamada, Koji

doi:10.1364/oe.20.009312

Cited by 76 publications

(47 citation statements)

References 19 publications

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“…For DWDM applications, lower index contrast than SiN waveguides may be required. This can be achieved by very-thin SiN waveguides as in [65], or silica waveguides as in [26]. In order to reduce the temperature sensitivity, one can use cladding materials with negative thermo-optic coefficients, which have been demonstrated for silicon waveguides [66]- [69].…”

Section: Remaining Challengesmentioning

confidence: 99%

Silicon Photonic Integrated Circuits for Wavelength-Division Multiplexing Applications

Dong

2016

IEEE J. Select. Topics Quantum Electron.

143

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Silicon photonics will provide low-cost, high-bandwidth and compact optical components for a wide range of applications in optical communications and interconnects. One of the cited key advantages is the capability of wavelength-division multiplexing (WDM). However, the nature of high-index contrast of silicon photonic devices leads to significant challenges when implementing on-chip WDM filters, which is one of the key components in WDM circuits. In this paper, we review several demonstrated silicon photonic WDM circuits based on monolithically integrated silicon nitride arrayed-waveguide gratings (AWGs) and thermally tunable silicon microring filters. The use of silicon nitride waveguides with lower index contrast than silicon waveguides enables the realization of high-performance AWGs. Meanwhile, they can evanescently couple to silicon waveguides with high efficiency. The thermally tunable silicon microrings can be used as modulators and wavelength (de)multiplexing filters to implement versatile WDM circuits. Reconfigurability of channel spacing and central wavelengths is achieved by individual tuning of the rings. In this paper, we review silicon photonic circuits for multiple-channel modulators, polarization-insensitive WDM receiver, and variable optical attenuators with multiplexer.

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Section: Remaining Challengesmentioning

confidence: 99%

Silicon Photonic Integrated Circuits for Wavelength-Division Multiplexing Applications

Dong

2016

IEEE J. Select. Topics Quantum Electron.

143

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“…Integration of photonic circuits on silicon provides a potential solution for low-cost, highly scalable and energy-efficient on-chip data communications. Wavelength-division multiplexing (WDM) is one of the most mature multiplexing technology used in telecommunications and has been widely explored for on-chip optical interconnects [3][4][5][6][7]. However, WDM has limitations in bandwidth density scalability and requires multiple precise wavelength sources, which are not currently available within the cost scenarios of a single-user computer.…”

Section: Introductionmentioning

confidence: 99%

Mode-Division Multiplexing for Silicon Photonic Network-on-Chip

Huang

et al. 2017

J. Lightwave Technol.

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Abstract-Optical interconnect is a potential solution to attain the large bandwidth on-chip communications needed in high performance computers in a low power and low cost manner. Mode-division multiplexing (MDM) is an emerging technology that scales the capacity of a single wavelength carrier by the number of modes in a multimode waveguide, and is attractive as a cost-effective means for high bandwidth density on-chip communications. Advanced modulation formats with high spectral efficiency in MDM networks can further improve the data rates of the optical link. Here, we demonstrate an intra-chip MDM communications link employing advanced modulation formats with two waveguide modes. We demonstrate a compact single wavelength carrier link that is expected to support 2x100 Gb/s mode multiplexed capacity. The network comprised integrated microring modulators at the transmitter, mode multiplexers, multimode waveguide interconnect, mode demultiplexers and integrated germanium on silicon photodetectors. Each of the mode channels achieves 100 Gb/s line rate with 84 Gb/s net payload data rate at 7% overhead for hard-decision forward error correction (HD-FEC) in the OFDM/16-QAM signal transmission.

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“…For telecommunication applications, the integration of an AWG demultiplexer with a photodetector array allows realizing a WDM receiver [10]. For spectroscopic applications, it is the first step towards a fully integrated spectroscopic sensing system [11].…”

Section: Introductionmentioning

confidence: 99%

III-V-on-silicon 2-µm-wavelength-range wavelength demultiplexers with heterogeneously integrated InP-based type-II photodetectors

et al. 2016

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2-µm-wavelength-range silicon-on-insulator (SOI) arrayed waveguide gratings (AWGs) with heterogeneously integrated InP-based type-II quantum well photodetectors are presented. Low insertion loss (2.5-3 dB) and low crosstalk (−30 to −25 dB) AWGs are realized. The InP-based type-II photodetectors are integrated with the AWGs using two different coupling approaches. Adiabatic-taper-based photodetectors show a responsivity of 1.6 A/W at 2.35 µm wavelength and dark current of 10 nA at −0.5 V, while photodetectors using grating-assisted coupling have a responsivity of 0.1 A/W and dark current of 5 nA at −0.5 V. The integration of the photodetector array does not degrade the insertion loss and crosstalk of the device. The photodetector epitaxial stack can also be used to realize the integration of a broadband light source, thereby enabling fully integrated spectroscopic systems. µm Ge islands resonant-cavity-enhanced detector with high-reflectivity bottom mirror," Appl. Phys. Lett. 85(14), 2697-2699 (2004).

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Monolithic integration of a silica AWG and Ge photodiodes on Si photonic platform for one-chip WDM receiver

Cited by 76 publications

References 19 publications

Silicon Photonic Integrated Circuits for Wavelength-Division Multiplexing Applications

Silicon Photonic Integrated Circuits for Wavelength-Division Multiplexing Applications

Mode-Division Multiplexing for Silicon Photonic Network-on-Chip

III-V-on-silicon 2-µm-wavelength-range wavelength demultiplexers with heterogeneously integrated InP-based type-II photodetectors

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