Velocity-matched distributed photodetectors and balanced photodetectors with p-i-n photodiodes

Islam, Md. Saiful; Murthy, S.; Itoh, T.; Wu, M.C.; Novak, D.; Waterhouse, R.B.; Sivco, Deborah L.; Cho, A.Y.

doi:10.1109/22.954807

Cited by 35 publications

(11 citation statements)

References 23 publications

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“…We recently achieved 45 mA of linear photocurrent in velocity-matched distributed photodetector (VMDP) with p-i-n PDs. The devices did not fail even with a DC photocurrent as high as 55 mA [27]. The higher effective barrier height of p-i-n PD helped improve the failure photocurrent level dramatically.…”

Section: Discussionmentioning

confidence: 98%

High power and highly linear monolithically integrated distributed balanced photodetectors

Islam¹,

Jung

Itoh

et al. 2002

J. Lightwave Technol.

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Abstract-A distributed balanced photodetector with high saturation photocurrent and excellent linearity has been experimentally demonstrated. The maximum linear direct current (dc) photocurrent of 33 mA per branch is equivalent to 66mA in single-ended photodetectors. A setup for investigating the alternating current (ac) linearity of the receiver is proposed and experimentally demonstrated. The receiver exhibits high ac linearity, even under high power operation. The bandwidth of the receiver remains unchanged when the effective dc photocurrent is varied from 1 mA to 21 mA. The distribution of photocurrents was also measured. Device length for optimum radiofrequency (RF) performance is calculated and implemented in the design. A correlation between the dark current of the photodiodes and their failure mechanism has been established. Analyzing the failure mechanism, junction diodes are found to be more suitable for high power applications.Index Terms-Analog fiber optic links, balanced photodetectors, failure mechanism, high photocurrent, high power photodiodes, metal-semiconductor-metal (MSM), microwave photonics, optical receivers, p-i-n, radiofrequency (RF) photonics.

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Section: Discussionmentioning

confidence: 98%

High power and highly linear monolithically integrated distributed balanced photodetectors

Islam¹,

Jung

Itoh

et al. 2002

J. Lightwave Technol.

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“…Nevertheless, encouraging results have already been demonstrated by several research institutions in Europe, USA and Japan [12][13][14][15]. In general, lumpedelement photomixers are RC-time limited and generated THz power rolls-off quite fast with frequency.…”

Section: Thz Power Generation With Pin Devicesmentioning

confidence: 93%

Optical far-IR wave generation - state-of-the-art and advanced device structures

Krozer¹,

Leone

Roskos

et al. 2004

SPIE Proceedings

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A recent study initiated by the European Space Agency aimed at identifying the most promising technologies to significantly improve on the generation of coherent electromagnetic radiation in the THz regime. The desired improvements include, amongst others, higher output powers and efficiencies at increasingly higher frequencies, wider tunability and miniaturization. The baseline technologies considered revolve around Photomixing and novel laser based technologies compared to all electronic techniques. Some of the most significant findings will be presented together with technological developments and experimental results selected for medium to short term development. These technologies include advanced p-i-n photomixer with superlattice structures and, THz quantum cascade lasers. Recent results achieved in these fields will be put into the potential perspective for the respective technology in the future.

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“…For the characterization of the SPPs detectors, cylindrically symmetric SPP can be launched by illuminating the farthest end of the Ag NW with a tunable laser, while the detectors can be monitored for SPP-induced photocurrents. This device will be analogous to a distributed PD [300]. This arrangement of distributed SPP detectors will allow an uncoupled and undetected SPPs in the first NW to be detected in subsequent NWs connected in series along the direction of the metallic NW waveguide.…”

Section: E Plasmonic Nw Pdsmentioning

confidence: 99%

A Perspective on Nanowire Photodetectors: Current Status, Future Challenges, and Opportunities

Logeeswaran

Nayak

et al. 2011

IEEE J. Select. Topics Quantum Electron.

140

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Abstract-One-dimensional semiconductor nanostructures (nanowires (NWs), nanotubes, nanopillars, nanorods, etc.) based photodetectors (PDs) have been gaining traction in the research community due to their ease of synthesis and unique optical, mechanical, electrical, and thermal properties. Specifically, the physics and technology of NW PDs offer numerous insights and opportunities for nanoscale optoelectronics, photovoltaics, plasmonics, and emerging negative index metamaterials devices. The successful integration of these NW PDs on CMOS-compatible substrates and various low-cost substrates via direct growth and transfer-printing techniques would further enhance and facilitate the adaptation of this technology module in the semiconductor foundries. In this paper, we review the unique advantages of NW-based PDs, current device integration schemes and practical strategies, recent device demonstrations in lateral and vertical process integration with methods to incorporate NWs in PDs via direct growth (nanoepitaxy) methods and transfer-printing methods, and discuss the numerous technical design challenges. In particular, we present an ultrafast surface-illuminated PD with 11.4-ps full-width at half-maximum (FWHM), edge-illuminated novel waveguide PDs, and some novel concepts of light trapping to provide a full-length discussion on the topics of: 1) low-resistance contact and interfaces for NW integration; 2) high-speed design and impedance matching; and 3) CMOS-compatible massmanufacturable device fabrication. Finally, we offer a brief outlook into the future opportunities of NW PDs for consumer and military application.

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Velocity-matched distributed photodetectors and balanced photodetectors with p-i-n photodiodes

Cited by 35 publications

References 23 publications

High power and highly linear monolithically integrated distributed balanced photodetectors

High power and highly linear monolithically integrated distributed balanced photodetectors

Optical far-IR wave generation - state-of-the-art and advanced device structures

A Perspective on Nanowire Photodetectors: Current Status, Future Challenges, and Opportunities

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