Velocity-matched distributed photodetectors with high saturation power and large bandwidth

Lin, L.Y.; Wu, Maochun; Itoh, T.; Vang, T.; Muller, Richard E.; Sivco, Deborah L.; Cho, A.Y.

doi:10.1109/drc.1996.546434

Cited by 18 publications

(28 citation statements)

References 2 publications

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“…This electrode has a relatively small periodic interaction with doped semiconductor layers, typically for about 10% of its total length. Distributed photocurrent simulations have shown this interaction to produce characteristic impedance close to 50 , small velocity mismatch between electrical and optical velocities ,and small microwave propagation loss [34], not too differently from the case of velocity-matched photodetectors (VMPDs) [10]. Fig.…”

Section: Advantages Of Tap Detectors With Alternating Gain and Absmentioning

confidence: 93%

“…MSM detectors are attractive to achieve lower capacitance per unit length and are easier to achieve a 50-transmission line with velocity-matched property [10], which implies the velocity of optical wave and photogenerated microwave signal are almost the same, as compared to the structure of p-i-n detectors [24]. The cross-sectional scheme of a typical MSM-TWPD is shown in Fig.…”

Section: A Msm-twpd Structurementioning

confidence: 99%

“…Approaches to increase the saturation power are increasing the carrier velocity using a uni-traveling carrier PD (UTC-PD) [2], [20], [21] or reducing the optical modal absorption constants and increasing absorption lengths in traveling-wave photodetector (TWPD), WGPD, or periodic traveling-wave photodetector (P-TWPD) structures [10], [22]- [24]. Recently, several research groups have successfully demonstrated the TWPDs with high speed and high-saturation power performance in the 1.55-m wavelength regime for the applications of analog or digital fiber communication [25], [26].…”

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confidence: 99%

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Traveling-Wave Photodetectors With High Power–Bandwidth and Gain–Bandwidth Product Performance

Lasaosa

Shi

Pasquariello

et al. 2004

IEEE J. Select. Topics Quantum Electron.

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Abstract-Traveling-wave photodetectors (TWPDs) are an attractive way to simultaneously maximize external quantum efficiency, electrical bandwidth, and maximum unsaturated output power. We review recent advances in TWPDs. Record high-peak output voltage together with ultrahigh-speed performance has been observed in low-temperature-grown GaAs (LTG-GaAs)-based metal-semiconductor-metal TWPDs at the wavelengths of 800 and 1300 nm. An approach to simultaneously obtain high bandwidth and high external efficiency is a traveling-wave amplifier-photodetector (TAP detector) that combines gain and absorption in either a sequential or simultaneous traveling-wave structure.

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Section: Advantages Of Tap Detectors With Alternating Gain and Absmentioning

confidence: 93%

Section: A Msm-twpd Structurementioning

confidence: 99%

mentioning

confidence: 99%

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Traveling-Wave Photodetectors With High Power–Bandwidth and Gain–Bandwidth Product Performance

Lasaosa

Shi

Pasquariello

et al. 2004

IEEE J. Select. Topics Quantum Electron.

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“…Previously, we have reported a velocity-matched distributed photodetector (VMDP) with a peak saturation photocurrent of 56 mA and a 3-dB bandwidth of 49 GHz [9]. Recently, an InP-based long wavelength VMDP has also been reported [10].…”

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confidence: 99%

Distributed balanced photodetectors for broad-band noise suppression

Islam¹,

Chau

Mathai

et al. 1999

IEEE Trans. Microwave Theory Techn.

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Abstract-A novel velocity-matched distributed balanced photodetector with a 50-coplanar waveguide output transmission line has been experimentally demonstrated in the InP/InGaAs material system. Distributed absorption and velocity matching are employed to increase the saturation photocurrent. A commonmode rejection ratio greater than 27 dB has been achieved. The radio-frequency (RF) link experiment conducted at 4.16 GHz shows that the relative intensity noise of the laser has been suppressed by more than 24 dB and shot-noise limited performance has been achieved. Significant improvement of signal-to-noise ratio has been observed over a wide range of frequencies and phase mismatch of input RF signals.

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“…Most of the reported integrated balanced receivers suffer from low saturation power and are not suitable for analog links [3]- [5]. Previously, we have reported a velocity-matched distributed photodetector (VMDP) with a peak saturation photocurrent of 56 mA and a 3-dB bandwidth of 49 GHz [6]. Recently, InP-based long wavelength VMDP has also been reported [7].…”

mentioning

confidence: 99%