Heterogeneous photodiodes on silicon nitride waveguides

Yu, Qianhuan; Gao, Jinliang; Ye, Nan; Chen, Baiheng; Sun, Keye; Xie, Ling; Srinivasan, Kartik; Zervas, Michael; Navickaitė, Gabrielė; Geiselmann, Michael; Beling, Andreas

doi:10.1364/oe.387939

Cited by 32 publications

(22 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In terms of signal coherence, recent studies have shown that the phase noise of the soliton repetition frequency at 10's of GHz can be orders of magnitude smaller than that of its pump laser 5,[19][20][21] . When microresonator solitons are married with integrated lasers 22,23 , amplifiers 24 , and high-speed photodiodes 25 through heterogeneous or hybrid integration, a fully integrated mmWave platform can be created with high-power, high-coherence performance, and the potential for large-scale deployment through mass production ( Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

Towards high-power, high-coherence, integrated photonic mmWave platform with microcavity solitons

et al. 2021

Self Cite

View full text Add to dashboard Cite

Millimetre-wave (mmWave) technology continues to draw great interest due to its broad applications in wireless communications, radar, and spectroscopy. Compared to pure electronic solutions, photonic-based mmWave generation provides wide bandwidth, low power dissipation, and remoting through low-loss fibres. However, at high frequencies, two major challenges exist for the photonic system: the power roll-off of the photodiode, and the large signal linewidth derived directly from the lasers. Here, we demonstrate a new photonic mmWave platform combining integrated microresonator solitons and high-speed photodiodes to address the challenges in both power and coherence. The solitons, being inherently mode-locked, are measured to provide 5.8 dB additional gain through constructive interference among mmWave beatnotes, and the absolute mmWave power approaches the theoretical limit of conventional heterodyne detection at 100 GHz. In our free-running system, the soliton is capable of reducing the mmWave linewidth by two orders of magnitude from that of the pump laser. Our work leverages microresonator solitons and high-speed modified uni-traveling carrier photodiodes to provide a viable path to chip-scale, high-power, low-noise, high-frequency sources for mmWave applications.

show abstract

Section: Introductionmentioning

confidence: 99%

Towards high-power, high-coherence, integrated photonic mmWave platform with microcavity solitons

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…2b ). These elements interface with a frequency doubler (SHG) including a polarization rotator and a photodetector array that are heterogeneously integrated 33 , 39 , 42 , 52 . The output of the octave-spanning Si 3 N 4 comb chip is directed to two cascaded dichroics that spectrally filter the microcomb into three key spectral bands, a long and a short wavelength band near 2 and 1 μm, respectively, separated by an octave, and the center band near 1.55 μm.…”

Section: Resultsmentioning

confidence: 99%

“…However, to realize these integrated microcomb-based systems, integrated photonic interposers that connect and operate on optical signals that transit between the many constituent photonic components will be critical. In fact, the pursuit of such integrated systems has driven recent progress in active photonics, e.g., lasers 29 – 32 and detectors 33 , nonlinear photonics in microresonators 5 – 9 , 34 , 35 and waveguides 36 – 39 , and passive photonics and heterogeneous integration 40 – 42 , and has motivated milestones such as the generation of microcombs using chip-scale lasers 43 – 45 . Photonic interposers that collect, filter, route, and interface light between many such active and passive devices are essential to realize the improvements in cost, size, weight, and power, performance, and scalability, offered by microcombs and integrated photonics, and will promote further system-level innovation using frequency combs.…”

Section: Introductionmentioning

confidence: 99%

“…We experimentally demonstrate the constituent passive elements of the proposed interposer, i.e., octave-wide dichroic couplers, resonant filters, and multimode interferometers (MMIs), and confirm that their performance agrees with our electromagnetic simulations via short-loop tests. The remaining heterogeneous integration-based components have been reported elsewhere previously 33 , 39 , 42 . We use the Si 3 N 4 photonic platform, based on requirements of low absorption, high damage threshold, and broad optical transparency.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Towards integrated photonic interposers for processing octave-spanning microresonator frequency combs

Rao

Moille

et al. 2021

Light Sci Appl

Self Cite

View full text Add to dashboard Cite

Microcombs—optical frequency combs generated in microresonators—have advanced tremendously in the past decade, and are advantageous for applications in frequency metrology, navigation, spectroscopy, telecommunications, and microwave photonics. Crucially, microcombs promise fully integrated miniaturized optical systems with unprecedented reductions in cost, size, weight, and power. However, the use of bulk free-space and fiber-optic components to process microcombs has restricted form factors to the table-top. Taking microcomb-based optical frequency synthesis around 1550 nm as our target application, here, we address this challenge by proposing an integrated photonics interposer architecture to replace discrete components by collecting, routing, and interfacing octave-wide microcomb-based optical signals between photonic chiplets and heterogeneously integrated devices. Experimentally, we confirm the requisite performance of the individual passive elements of the proposed interposer—octave-wide dichroics, multimode interferometers, and tunable ring filters, and implement the octave-spanning spectral filtering of a microcomb, central to the interposer, using silicon nitride photonics. Moreover, we show that the thick silicon nitride needed for bright dissipative Kerr soliton generation can be integrated with the comparatively thin silicon nitride interposer layer through octave-bandwidth adiabatic evanescent coupling, indicating a path towards future system-level consolidation. Finally, we numerically confirm the feasibility of operating the proposed interposer synthesizer as a fully assembled system. Our interposer architecture addresses the immediate need for on-chip microcomb processing to successfully miniaturize microcomb systems and can be readily adapted to other metrology-grade applications based on optical atomic clocks and high-precision navigation and spectroscopy.

show abstract

“…As the platforms mature, additional functionality is being added besides the commonly available heaters/phase shifters. Recently, Lionix demonstrated the co-integration of an InP gain chip for 1550 nm through butt-coupling [7] and Ligentec showed wafer-bonding-based integration of PDs for 1550 nm as well [8]. However, a lack of integrated light sources and detectors remains for wavelengths other than the telecom range.…”

Section: Introductionmentioning

confidence: 99%

Transfer-print integration of GaAs p-i-n photodiodes onto silicon nitride waveguides for near-infrared applications

Goyvaerts¹,

Kumari²,

Uvin³

et al. 2020

Opt. Express

View full text Add to dashboard Cite

We demonstrate waveguide-detector coupling through the integration of GaAs p-in photodiodes (PDs) on top of silicon nitride grating couplers (GCs) by means of transfer-printing. Both single device and arrayed printing is demonstrated. The photodiodes exhibit dark currents below 20 pA and waveguide-referred responsivities of up to 0.30 A/W at 2V reverse bias, corresponding to an external quantum efficiency of 47% at 860 nm. We have integrated the detectors on top of a 10-channel on-chip arrayed waveguide grating (AWG) spectrometer, made in the commercially available imec BioPIX-300 nm platform.

show abstract

Heterogeneous photodiodes on silicon nitride waveguides

Cited by 32 publications

References 16 publications

Towards high-power, high-coherence, integrated photonic mmWave platform with microcavity solitons

Towards high-power, high-coherence, integrated photonic mmWave platform with microcavity solitons

Towards integrated photonic interposers for processing octave-spanning microresonator frequency combs

Transfer-print integration of GaAs p-i-n photodiodes onto silicon nitride waveguides for near-infrared applications

Contact Info

Product

Resources

About