Ultra-Low-Loss Silicon Waveguides for Heterogeneously Integrated Silicon/III-V Photonics

Tran, Minh A.; Huang, Duanni; Komljenović, Tin; Peters, Jonathan D.; Malik, Aditya; Bowers, John E.

doi:10.3390/app8071139

Cited by 94 publications

(22 citation statements)

References 45 publications

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“…In this design, κ is inversely proportional to the distance between the holes and the waveguide, which can be well controlled with lithography. The dependence between this distance and κ was previously simulated and experimentally verified [28]. Finally, the other component enabled by the ULL Si platform is the high-Q ring resonator, which was demonstrated to be as high as 4.1 million for intrinsic Q and 2.1 million for loaded Q.…”

Section: Laser Design a Ultralow-loss Silicon Platformmentioning

confidence: 68%

“…For single TE-mode operation, the width of the waveguide should be kept under 2 μm. Further details regarding the development of this platform can be found in [28]. We compare several low-loss waveguide platforms based on foundry-compatible materials such as silicon, silicon nitride, and indium phosphide in Table 1.…”

Section: Laser Design a Ultralow-loss Silicon Platformmentioning

confidence: 99%

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High-power sub-kHz linewidth lasers fully integrated on silicon

Huang

Tran

Guo

et al. 2019

Optica

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163

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We demonstrate a fully integrated extended distributed Bragg reflector (DBR) laser with ∼1 kHz linewidth and over 37 mW output power, as well as a ring-assisted DBR laser with less than 500 Hz linewidth. The extended DBR lasers are fabricated by heterogeneously integrating III-V material on Si as a gain section plus a 15 mm long, low-kappa Bragg grating reflector in an ultralow-loss silicon waveguide. The low waveguide loss (0.16 dB/cm) and long Bragg grating with narrow bandwidth (2.9 GHz) are essential to reducing the laser linewidth while maintaining high output power and single-mode operation. The combination of narrow linewidth and high power enable its use in coherent communications, RF photonics, and optical sensing.

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Section: Laser Design a Ultralow-loss Silicon Platformmentioning

confidence: 68%

Section: Laser Design a Ultralow-loss Silicon Platformmentioning

confidence: 99%

High-power sub-kHz linewidth lasers fully integrated on silicon

Huang

Tran

Guo

et al. 2019

Optica

Self Cite

163

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“…It is possible to integrate all components of the proposed ring resonator based MPBPF on a chip, reducing the overall footprint of the system, since the low-loss heterogeneous III-V/silicon laser [32], low half-wave voltage electro-optical modulator [33], and high-speed photodetectors are available on chip [30,34]. Moreover, the demonstrated RF bandpass filter has great potential in other applications, such as OEO [2,35] and microwave frequency measurement [36] compared with bandstop filters, due to the high passband gain and high spectral resolution.…”

Section: Discussionmentioning

confidence: 99%

Positive link gain microwave photonic bandpass filter using Si₃N₄-ring-enabled sideband filtering and carrier suppression

et al. 2019

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Microwave photonic bandpass filters (MPBPFs) are important building blocks in radio-frequency (RF) signal processing systems. However, most of the reported MPBPFs fail to satisfy the stringent real-world performance metrics, particularly low RF insertion loss. In this paper we report a novel MPBPF scheme using two cascaded integrated silicon nitride (Si 3 N 4 ) ring resonators, achieving a high link gain in the RF filter passband. In this scheme, one ring operates at an optimal over-coupling condition to enable a strong RF passband whilst an auxiliary ring is used to increase the detected RF signal power via tuning the optical carrier-to-sideband ratio. The unique combination of these two techniques enables compact size as well as high RF performance. Compared to previously reported ring-based MPBPFs, this work achieves a record-high RF gain of 1.8 dB in the passband, with a high spectral resolution of 260 MHz. Furthermore, a multi-band MPBPF with optimized RF gain, tunable central frequencies, and frequency spacing tunability is realized using additional ring resonators, highlighting the scalability and flexibility of this chip-based MPBPF scheme.

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“…20 By moving to more complicated waveguide geometries, silicon waveguides have been reported with losses below 3 dB/m. [21][22][23] Additionally, some approaches toward ultra-low-loss Si 3 N 4 waveguides have been reported demonstrating less than 1 dB/m loss. 24,25 Nevertheless, regardless of the technology, the propagation loss of an integrated photonic delay line is significantly higher than the ∼0.17 dB∕km propagation loss of commercial optical fiber.…”

Section: Concept For Achieving Short-term Stabilitymentioning

confidence: 99%

Developing a chip-scale optical clock

Zhou

Cahill

et al. 2021

Opt. Eng.

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We report our in-house R&D efforts of designing and developing key integrated photonic devices and technologies for a chip-scale optical oscillator and/or clock. This would provide precision sources to RF-photonic systems. It could also be the basic building block for a photonic technology to provide positioning, navigation, and timing as well as 5G networks. Recently, optical frequency comb (OFC)-based timing systems have been demonstrated for ultra-precision time transfer. Our goal is to develop a semiconductor-based, integrated photonic chip to reduce the size, weight, and power consumption, and cost of these systems. Our approach is to use a self-referenced interferometric locking circuit to provide short-term stabilization to a micro-resonator-based OFC. For long-term stabilization, we use an epsilon-near-zero (ENZ) metamaterial to design an environment-insensitive cavity/resonator, thereby enabling a chipscale optical long-holdover clock. © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Ultra-Low-Loss Silicon Waveguides for Heterogeneously Integrated Silicon/III-V Photonics

Cited by 94 publications

References 45 publications

High-power sub-kHz linewidth lasers fully integrated on silicon

High-power sub-kHz linewidth lasers fully integrated on silicon

Positive link gain microwave photonic bandpass filter using Si₃N₄-ring-enabled sideband filtering and carrier suppression

Developing a chip-scale optical clock

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Ultra-Low-Loss Silicon Waveguides for Heterogeneously Integrated Silicon/III-V Photonics

Cited by 94 publications

References 45 publications

High-power sub-kHz linewidth lasers fully integrated on silicon

High-power sub-kHz linewidth lasers fully integrated on silicon

Positive link gain microwave photonic bandpass filter using Si3N4-ring-enabled sideband filtering and carrier suppression

Developing a chip-scale optical clock

Contact Info

Product

Resources

About

Positive link gain microwave photonic bandpass filter using Si₃N₄-ring-enabled sideband filtering and carrier suppression