High-speed ultracompact buried heterostructure photonic-crystal laser with 13 fJ of energy consumed per bit transmitted

Matsuo, Shinji; Shinya, Akihiko; Kakitsuka, Takaaki; Nozaki, Kengo; Segawa, Takehiko; Sato, Tomonari; Kawaguchi, Yoshihiro; Notomi, Masaya

doi:10.1038/nphoton.2010.177

Cited by 321 publications

(183 citation statements)

References 30 publications

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“…The lower experimental enhancement factor is most likely to be due to additional heating and higher carrier loss due to surface recombination in the PhC waveguide structures as well as multiple-scattering effects due to fabrication disorder. However, recent work has demonstrated the feasibility of realizing a buried heterostructure and electrical pumping 35 , which will strongly reduce these limitations. Furthermore, dispersion engineering 4 may be applied to optimize the group index variation relative to the gain peak.…”

Section: Discussionmentioning

confidence: 99%

Slow-light-enhanced gain in active photonic crystal waveguides

Lunnemann

Chen

et al. 2014

Nat Commun

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Passive photonic crystals have been shown to exhibit a multitude of interesting phenomena, including slow-light propagation in line-defect waveguides. It was suggested that by incorporating an active material in the waveguide, slow light could be used to enhance the effective gain of the material, which would have interesting application prospects, for example enabling ultra-compact optical amplifiers for integration in photonic chips. Here we experimentally investigate the gain of a photonic crystal membrane structure with embedded quantum wells. We find that by solely changing the photonic crystal structural parameters, the maximum value of the gain coefficient can be increased compared with a ridge waveguide structure and at the same time the spectral position of the peak gain be controlled. The experimental results are in qualitative agreement with theory and show that gain values similar to those realized in state-of-the-art semiconductor optical amplifiers should be attainable in compact photonic integrated amplifiers.

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Section: Discussionmentioning

confidence: 99%

Slow-light-enhanced gain in active photonic crystal waveguides

Lunnemann

Chen

et al. 2014

Nat Commun

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“…We believe that our observation will stimulate the discovery of new phenomena in fundamental research on cavities in photonic crystals 24,25 and also the localized modes in disordered photonic systems 27 . As regards the realization of novel nanophotonic devices, our new approach for creating cavities is useful for movable devices such as nanolasers 43 or all-optical memories 44 with the capability of integrating them on a Si platform. Especially, a laser is one of the most interesting applications of our system.…”

mentioning

confidence: 99%

Movable high-Q nanoresonators realized by semiconductor nanowires on a Si photonic crystal platform

Birowosuto¹,

Yokoo²,

et al. 2014

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Sub-wavelength semiconductor nanowires have been attracting strong interest recently for photonic applications because they possess various unique optical properties and offer great potential for miniaturizing devices. However, with these nanowires, it is not easy to realize tight light confinement or efficient coupling with photonic circuits. Here we show that a high Q nanocavity can be created by placing a single III/V semiconductor nanowire with the diameter less than 100 nm in a grooved waveguide in a Si photonic crystal, and employing nanoprobe manipulation. We have observed very fast spontaneous emission (91 ps) from nanowires accelerated by the strong Purcell enhancement in nanocavities, which proves that unprecedented strong light confinement can be achieved in nanowires. Furthermore, this unique system enables us to move the nanocavity anywhere along the waveguide. This configuration provides us tremendous flexibility in integrated photonics because we can add and displace various functionalities of III/V nanocavity devices in Si photonic circuits.

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“…We have employed the combination of a PhC waveguide and cavity and an ultrasmall BH to demonstrate optical nanodevices such as nanolasers and all-optical memories [9], [11], which exhibited a record low power consumption. This structure can be employed for PDs by embedding a compact InGaAs absorber, thereby reducing the device capacitance by miniaturization.…”

Section: Device Structure and Capacitancementioning

confidence: 99%

“…We have been studying such a PhC-PD with a compact InGaAs absorber embedded in an InP-based PhC waveguide, which we fabricated using a buried-heterostructure (BH) formation technique [9]- [11]. This compact BH with a PhC waveguide can confine both photons and carriers in an ultrasmall space to achieve both high optical responsivity and ultrasmall device capacitance thus making it desirable in terms of meeting the demand for an amplifier-less photoreceiver.…”

Section: Introductionmentioning

confidence: 99%

Sub-fF-Capacitance Photonic-Crystal Photodetector Towards fJ/bit On-Chip Receiver

Nozaki

Matsuo

Takeda

et al. 2017

IEICE Trans. Electron.

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SUMMARYAn ultra-compact InGaAs photodetector (PD) is demonstrated based on a photonic crystal (PhC) waveguide to meet the demand for a photoreceiver for future dense photonic integration. Although the PhC-PD has a length of only 1.7 μm and a capacitance of less than 1 fF, a high responsivity of 1 A/W was observed both theoretically and experimentally. This low capacitance PD allows us to expect a resistor-loaded receiver to be realized that requires no electrical amplifiers. We fabricated a resistor-loaded PhC-PD for light-to-voltage conversion, and demonstrated a kV/W efficiency with a GHz bandwidth without using amplifiers. This will lead to a photoreceiver with an ultralow energy consumption of less than 1 fJ/bit, which is a step along the road to achieving a dense photonic network and processor on a chip. key words: photonic crystal waveguide, photodetector, buried heterostructure, optical interconnection

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High-speed ultracompact buried heterostructure photonic-crystal laser with 13 fJ of energy consumed per bit transmitted

Cited by 321 publications

References 30 publications

Slow-light-enhanced gain in active photonic crystal waveguides

Slow-light-enhanced gain in active photonic crystal waveguides

Movable high-Q nanoresonators realized by semiconductor nanowires on a Si photonic crystal platform

Sub-fF-Capacitance Photonic-Crystal Photodetector Towards fJ/bit On-Chip Receiver

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