Enhancement of VCSEL Performances Using Localized Copper Bonding Through Silicon Vias

Taleb, Fethallah; Pes, Salvatore; Paranthoën, Cyril; Levallois, Christophe; Chevalier, Nicolas; Sagazan, Olivier de; Corre, Alain Le; Folliot, Hervé; Alouini, Mehdi

doi:10.1109/lpt.2017.2703599

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…These layers are added to the quarter-wave SiN x layer already deposited by PECVD to form a DBR of 3 periods with a theoretical reflectivity of 97%. Such a DBR has been chosen as bottom mirror since its deposition and etching are well controlled and have already been used within other types of III-V devices [21]. This DBR is then etched on the edges of the sample to keep an electrical access to the different PDs (see Fig.…”

Section: Tunable Filter Fabricationmentioning

confidence: 99%

Liquid crystal-based tunable photodetector operating in the telecom C-band

Levallois¹,

Sadani²,

Boisnard³

et al. 2018

Opt. Express

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Liquid crystal (LC) microcells monolithically integrated on the surface of InGaAs based photodiodes (PDs) are demonstrated. These LC microcells acting as tunable Fabry-Perot filters exhibit a wavelength tunability of more than 100 nm around 1550 nm with less than 10V applied voltage. Using a tunable laser operating in the S and C bands, photocurrent measurements are performed. On a 70 nm tuning range covered with a driving voltage lower than 7V, the average sensitivity for the PD is 0.4 A/W and the spectral linewidth of the LC filter remains constant, showing a FWHM of 1.5 nm. Finally, the emission spectrum from an Er-doped fiber is acquired by using this tunable PD as a micro-spectrometer.

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Section: Tunable Filter Fabricationmentioning

confidence: 99%

Liquid crystal-based tunable photodetector operating in the telecom C-band

Levallois¹,

Sadani²,

Boisnard³

et al. 2018

Opt. Express

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show abstract

“…Short-reach optical communications increasingly demand light sources with sufficient output power, small size, low cost, high efficiency, stable single-mode operation, and the capability to be directly modulated at high-speeds [4]. In the past few decades, vertical-cavity surface emitting lasers (VCSELs) have been widely developed and used in 1-100Gb/s communication systems due to their low cost, robust operation, and high performance [5,6].…”

Section: Introductionmentioning

confidence: 99%

Measuring the frequency response of optically pumped metal-clad nanolasers

Hayenga

Khajavikhan

et al. 2019

Opt. Express

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We report on our initial attempt to characterize the intrinsic frequency response of metal-clad nanolasers. The probed nanolaser is optically biased and modulated, allowing the emitted signal to be detected using a high-speed photodiode at each modulation frequency. Based on this technique, the prospect of high-speed operation of nanolasers is evaluated by measuring the -factor, which is the ratio of the resonance frequency to the square root of its output power ( / / ). Our measurements show that for nanolasers, this factor is an order of magnitude greater than that of other state-of-the-art directly modulated semiconductor lasers. The theoretical analysis, based on the rate equation model and finite element method simulations of the cavity is in full agreement with the measurement results.

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CW Operation of a Tunable 1550-nm VCSEL Integrating Liquid-Crystal Microcells

Boisnard

Alouini

Debernardi

et al. 2020

IEEE Photon. Technol. Lett.

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Laser (VCSEL) with a liquid crystal (LC) microcell monolithi-2 cally integrated on its surface for spectral tuning is investigated. 3 Unlike tunable VCSELs integrating a movable membrane, here 4 the physical length of the cavity remains unchanged and only the 5 voltage applied on the LC ensures a refractive index modification 6 for a particular polarization emitted by the VCSEL. This tunable 7 VCSEL operates in CW at room temperature and exhibits 8 more than 23 nm wavelength tuning around 1.55 µm at a 9 maximum applied voltage of 20 V. The measured laser threshold 10 around 6.5 mW is still comparable to VCSEL without 11 LC microcell, a clear indication that the optical losses related 12 the LC are very low. On the other hand, for this first optically 13 pumped device, the lasing characteristics suggest that the LC 14 birefringence is lower than expected. To assess this hypothesis, 15 thermo-optical simulations have been conducted.

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Enhancement of VCSEL Performances Using Localized Copper Bonding Through Silicon Vias

Cited by 3 publications

References 11 publications

Liquid crystal-based tunable photodetector operating in the telecom C-band

Liquid crystal-based tunable photodetector operating in the telecom C-band

Measuring the frequency response of optically pumped metal-clad nanolasers

CW Operation of a Tunable 1550-nm VCSEL Integrating Liquid-Crystal Microcells

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