Comb-laser driven WDM for short reach silicon photonic based optical interconnection

Knights, Andrew P.; Huante-Ceron, Edgar; Ackert, Jason J.; Logan, Dylan F.; Wojcik, G.; Zhang, Feng; Gubenko, A.; Mikhrin, S. S.

doi:10.1109/group4.2012.6324136

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…Currently, in commercial telecommunications links, laser wavelengths are kept locked to a fixed wavelength grid (the ITU standard). However, for the future shortreach interconnects that silicon-photonic devices are envisioned to populate, a different class of low-power laser sources will be required [19,[28][29][30]. For athermal solutions, it will be required that laser wavelengths are fixed to the resonant wavelengths of the microring resonators, and that the stability of the laser wavelength can be ensured throughout operation of the optical link.…”

Section: Thermal Effects On Microring Resonator Based Devicesmentioning

confidence: 99%

Resolving the thermal challenges for silicon microring resonator devices

2014

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Silicon microring resonators have been hailed for their potential use in next-generation optical interconnects. However, the functionality of silicon microring based devices suffer from susceptibility to thermal fluctuations that is often overlooked in their demonstrated results, but must be resolved for their future implementation in microelectronic applications. We survey the emerging efforts that have been put forth to resolve these thermal susceptibilities and provide a comprehensive discussion of their advantages and disadvantages.Keywords: integrated photonics; microring resonators; optical interconnects; silicon photonics. The growing bandwidth needs within data applications have motivated the replacement of traditionally electronic links with optical links for information networks as diverse as data centers, supercomputers, and fiber-optic access networks [1,2]. Applications such as these stress the traditional portfolio of optical components, rebalancing the emphasis from expensive high-performance components towards low-cost high-volume components that can be closely integrated with electronics. With these considerations in mind, the silicon photonics platform has received wide attention for its ability to deliver the necessary bandwidth required at an economy-of-scale that will be enabled by its compatibility with CMOS fabrication processes [3].Within the silicon photonic platform, traditional optical components such as low-loss waveguides [4], lowloss waveguide crossings [5], high-speed mach-zhender modulators (MZM) [6], arrayed waveguide-gratings [7], and efficient photodetectors [8,9] have been demonstrated. Leveraging the high index contrast between silicon and silicon-on-insulator, the aforementioned components have been shown with much smaller footprints than their counterparts in more conventional optical platforms. For active devices, these smaller footprints directly translate to higher energy-efficiencies.In addition to providing these improvements in footprint and energy-efficiency for traditional devices, the high-index contrast present in the silicon photonic platform enables the effective use of microring-based devices. A microring is a traveling wave resonator consisting of a ring structure side-coupled to a bus waveguide. While they have also been demonstrated in other material platforms, the high-index contrast of silicon and silicon-oninsulator has allowed them to be manifested as small as 1.5 µm in radius [10], and when used in conjunction with the free-carrier dispersion effect [11], well into Ghz-rate bandwidth. Figure 1A illustrates the optical resonance of the microring and its shift with applied electrical bias [12]. In their most basic capacity they can serve as effective filters [13], switches [14,15], and modulators [16,17]. Additionally, microrings can be cascaded along the same waveguide bus, with each microring being offset to provide functionality for a specific wavelength. In this manner, the microring lends itself naturally for wavelength-divisionmultiplexed ...

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Section: Thermal Effects On Microring Resonator Based Devicesmentioning

confidence: 99%

Resolving the thermal challenges for silicon microring resonator devices

2014

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“…Rather than routing the individual comb lines to several modulators via WDM multiplexers [19][20][21], they can be individually modulated with frequency-selective devices such as high-performance RRMs [22] that can be simply cascaded along a single bus waveguide [23,24]. While RRMs suffer from a requirement to be tightly thermally stabilized leading to excess power consumption [25], any type of WDM system requires some form of temperature control: at the minimum, the laser(s) need to be temperature controlled to spectrally match the WDM multiplexers [26].…”

Section: Introductionmentioning

confidence: 99%

Silicon photonics WDM transmitter with single section semiconductor mode-locked laser

Müller

Hauck

Shen

et al. 2015

Advanced Optical Technologies

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Abstract:We demonstrate a wavelength domain-multiplexed (WDM) optical link relying on a single section semiconductor mode-locked laser (SS-MLL) with quantum dash (Q-Dash) gain material to generate 25 optical carriers spaced by 60.8 GHz, as well as silicon photonics (SiP) resonant ring modulators (RRMs) to modulate individual optical channels. The link requires optical reamplification provided by an erbium-doped fiber amplifier (EDFA) in the system experiments reported here. Open eye diagrams with signal quality factors (Q-factors) above 7 are measured with a commercial receiver (Rx). For higher compactness and cost effectiveness, reamplification of the modulated channels with a semiconductor optical amplifier (SOA) operated in the linear regime is highly desirable. System and device characterization indicate compatibility with the latter. While we expect channel counts to be primarily limited by the saturation output power level of the SOA, we estimate a single SOA to support more than eight channels. Prior to describing the system experiments, component design and detailed characterization results are reported including design and characterization of RRMs, ring-based resonant optical add-drop multiplexers (RROADMs) and thermal tuners, S-parameters resulting from the interoperation of RRMs and RR-OADMs, and characterization of Q-Dash SS-MLLs reamplified with a commercial SOA. Particular emphasis is placed on peaking effects in the transfer functions of RRMs and RR-OADMs resulting from transient effects in the optical domain, as well as on the characterization of SS-MLLs in regard to relative intensity noise (RIN), stability of the modes of operation, and excess noise after reamplification.

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“…With the rapid growth of global network services such as HDTV, network video, and online games, the number of optical channels and wavelengths in optical communication is rapidly increasing. Optical communication, which has the advantages of large bandwidth, low loss, easy transmission, high security and stable system, become very important for solving communication problems [1][2][3][4][5][6]. In order to further increase the communication rate, a large number of new theories, as well as technical research, are still being carried out continuously, such as WDM technology, all-optical network technology, optical soliton communication technology, etc.…”

Section: Introductionmentioning

confidence: 99%

The Graphene-based Ring Resonator and Its Application to Wavelength Division Multiplexing

Liu¹,

Wei²,

Qiu³

et al. 2019

Proceedings of the 2019 International Conference on Modeling, Simulation, Optimization and Numerical Techniques (SMONT 2019)

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In this paper, we investigate the properties of ring resonators that are based on graphene and the application to wavelength division multiplexing (WDM). The proposed structure can really function as a wavelength division multiplexer. We numerically demonstrate that the proposed eight-channel wavelength division multiplexing systems can provide a larger transmission, higher quality factor and less crosstalk.

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Comb-laser driven WDM for short reach silicon photonic based optical interconnection

Abstract: We describe an InAs/GaAs quantum dot laser used in conjunction with an SOI ring resonator modulation scheme to provide mutli-wavelength transmission for optical interconnects. The current proposed co-packaging solution may be extended using bonding technology.

Cited by 5 publications

References 8 publications

Resolving the thermal challenges for silicon microring resonator devices

Resolving the thermal challenges for silicon microring resonator devices

Silicon photonics WDM transmitter with single section semiconductor mode-locked laser

The Graphene-based Ring Resonator and Its Application to Wavelength Division Multiplexing

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