High-Power Flip-Chip Bonded Modified Uni-Traveling Carrier Photodiodes with −2.6 dBm RF Output Power at 160 GHz

Morgan, John D.; Sun, Keye; Li, Qinglong; Estrella, Steven; Woodson, Maddy; Hay, Kenneth E.; Mashanovitch, Milan; Beling, Andreas

doi:10.1109/ipcon.2018.8527260

Cited by 23 publications

(13 citation statements)

References 9 publications

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“…Once in the drift layer, electron space-charge effects are mitigated or chargecompensated by the light n-type doping in the drift layer 44 . Fabrication flow of the PDs and similar PD epitaxial layering structures have been reported previously 45 , and so has the AlN submount 46 . The MUTC PDs used in this experiment have demonstrated dark currents as low as 200 pA at − 2 V, a 3-dB bandwidth of up to 145 GHz (4 μm diameter PD), a responsivity of 0.2 A/W at 1550 nm, and a −2.6 dBm maximum output power at 160 GHz at − 3 V bias 38 .…”

Section: Modified Uni-traveling Carrier Photodiodementioning

confidence: 66%

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

et al. 2021

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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.

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Section: Modified Uni-traveling Carrier Photodiodementioning

confidence: 66%

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

et al. 2021

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“…Once in the drift layer, electron space-charge effects are mitigated or charge-compensated by the light n-type doping in the drift layer 42 . Fabrication flow of the PDs and similar PD epitaxial layering structures have been reported previously 43 , and so has the AlN submount 44 . The MUTC PDs used in this experiment have demonstrated dark currents as low as 200 pA at -2 V, 3-dB bandwidth of up to 145 GHz (4-µm diameter PD), responsivity of 0.2 A/W at 1550-nm, and -2.6 dBm maximum output power at 160 GHz at -3 V bias 37 .…”

Section: Methodsmentioning

confidence: 66%

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

Wang,

Morgan,

Sun

et al. 2020

Preprint

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Millimeter-wave (mmWave) technology continues to draw large 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 fiber. 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 by 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 highspeed modified uni-traveling carrier photodiodes to provide a viable path to chip-scale high-power, low-noise, high-frequency sources for mmWave applications.

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“…We photodetect the entire soliton, except the pump laser, and record the relative intensity noise with an electronic spectrum analyzer (ESA). Additionally, we use a ∼ 150 GHz bandwidth modified uni-traveling carrier photodetector [32] and an ESA to record the outcoming pattern repetition frequency of suitable PhCR devices.…”

Section: Apparatus and Proceduresmentioning

confidence: 99%

“…This signal results from a reflection of the backward-propagating comb to the forward transmission port. To measure the repetition frequency, we couple a portion of the comb power to a ∼ 150 GHz bandwidth, 0.2 A/W responsivity photodetector [32]. We use an optical circulator and a 2 THz bandwidth optical filter prior to photodetection to reduce photocurrent from the pump laser.…”

Section: Frequency-comb Sources From the Dark-to-bright Pulse Continuummentioning

confidence: 99%

A continuum of bright and dark pulse states in a photonic-crystal resonator

Yu,

Lucas,

Zang

et al. 2021

Preprint

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Nonlinearity is a powerful determinant of physical systems. Controlling nonlinearity leads to interesting states of matter and new applications. In optics, diverse families of continuous and discrete states arise from balance of nonlinearity and group-velocity dispersion (GVD). Moreover, the dichotomy of states with locally enhanced or diminished field intensity depends critically on the relative sign of nonlinearity and either anomalous or normal GVD. Here, we introduce a resonator with unconditionally normal GVD and a single defect mode that supports both dark, reduced-intensity states and bright, enhanced-intensity states. We access and explore this dark-to-bright pulse continuum by phase-matching for soliton generation with a photonic-crystal resonator, which mediates the competition of nonlinearity and normal GVD. These stationary temporal states are coherent frequency combs, featuring highly designable spectra and ultralow noise repetition-frequency and intensity characteristics. The dark-to-bright continuum illuminates physical roles of Kerr nonlinearity, GVD, and laser propagation in a gapped nanophotonic medium.

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High-Power Flip-Chip Bonded Modified Uni-Traveling Carrier Photodiodes with −2.6 dBm RF Output Power at 160 GHz

Cited by 23 publications

References 9 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 high-power, high-coherence, integrated photonic mmWave platform with microcavity solitons

A continuum of bright and dark pulse states in a photonic-crystal resonator

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