Oct 05, 2025
In this letter, we demonstrate a single-mode 850 nm VCSEL with a bit rate of 60 Gb/s under NRZ modulation and 104 Gb/s under PAM4 modulation across a 100
Feb 28, 2026
VCSEL, or Vertical Cavity Surface-Emitting Laser, is a type of semiconductor laser that emits light perpendicular to the surface of the device. Unlike traditional edge-emitting lasers, which
Sep 14, 2025
Abstract In vertical-cavity surface-emitting lasers (VCSELs), the cavity length defines the resonance wavelength, which is directly related to the laser detuning, that is, the difference between
Nov 12, 2025
Dual electrodes in miniaturized 7 × 7 vertical-cavity surface-emitting laser array are demonstrated. Compared with references, this array exhibits heavier damping electrical–optical
Jul 19, 2025
This thesis will focus on the development of oxide-VCSELs that are able to transmit error-free 50 Gb/s data with direct NRZ modulation in 100 m optical fiber at room temperature.
Aug 26, 2025
In this study, a least complex and cost-effective downstream radio over fiber system (RoF)-based direct modulation vertical cavity surface emitting
Aug 24, 2025
Vertical-cavity surface-emitting lasers (VCSELs) were becoming the dominating optical sources for data communication in such centers for all
Apr 02, 2026
AR-VCSEL stands out among semiconductor lasers, offering a well-balanced power density and brightness, making it a cost-effective solution for long-distance LiDARs.
Mar 05, 2026
Vertical-cavity surface-emitting lasers (VCSELs) operating at 850 nm have emerged as the dominant solution for short-reach interconnects due to their inherent advantages in power
Feb 15, 2026
Vertical cavity surface emitting lasers (VCSELs) are high performance quality and low cost light sources in many optoelectronic
Jul 27, 2025
Since its conception by Professor Kenichi Iga at the Tokyo Institute of Technology in 1977 [1, 2, 3], the vertical-cavity surface-emitting laser (VCSEL)
Feb 20, 2026
We propose an ultra-compact 25-Gb/s NRZ × 16-channel optical transceiver based on a 1060-nm coupled-cavity single-mode vertical cavity surface emitting laser (VCSEL) array and single-mode 19
Aug 10, 2025
Operating Principles of VCSELs Rainer Michalzik and Karl Joachim Ebeling University of Ulm, Optoelectronics Department, D-89069 Ulm, Germany Abstract. In this chapter we will deal with major
Jun 25, 2026
The challenge prompted the investigation of vertical cavity surface emitting laser arrays, multilayered engineered photonic crystals, and more recently supersymmetric structures to promote single-mode
Jun 08, 2026
The authors showcase an innovative anti-reflective vertical-cavity surface-emitting laser (AR-VCSEL) that achieves low divergence and maintains a single-mode lasing. The 6-junction AR
Apr 18, 2026
Vertical-cavity surface-emitting lasers (VCSELs) are wide-spread laser sources for different applications in optical communication and sensing. The evolution of
May 20, 2026
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Apr 07, 2026
A high-speed single-mode vertical-cavity surface-emitting laser (VCSEL) is one of the most important light sources for optical interconnects in data centers. Single
May 15, 2026
Abstract Vertical cavity surface emitting lasers (VCSELs) are semiconductor lasers with extremely short (~1 wavelength) vertical optical cavities, the cavity being defined by distributed Bragg reflectors
Oct 30, 2025
Abstract—Vertical-Cavity Surface-Emitting Lasers (VCSELs) are highly promising devices for the construction of neuro-morphic photonic information processing systems, due to their numerous
Sep 27, 2025
Summary GaN-based semiconductors are great materials for optoelectronic devices because of their broad emission wavelength covering from the near ultraviolet to the yellow-green.
Sep 12, 2025
As bandwidth demand increases, electrical interconnects suffer from limited reach due to channel loss. Multi-mode vertical-cavity surface-emitting laser (VCSEL)-based optical interconnects can enable
Apr 03, 2026
Here, we report our work on 850 nm multimode VCSELs to achieve high bandwidth to support single-channel 112 Gbps NRZ and 200 Gbps PAM4, a critical milestone for supporting next-generation
Apr 02, 2026
Vertical Cavity Surface Emitting Laser (VCSEL) technology has become an indispensable element in optical communication systems and
Mar 19, 2026
The mode-coupling vertical-cavity surface-emitting lasers (VCSELs) with all-open and 5-µm-open aperture designs. The aperture designs together
Jan 31, 2026
Abstract In this work, a hybrid architecture employing Vertical Cavity Surface Emitting Laser (VCSEL) based Single Mode Fiber (SMF) link followed by Free Space Optic (FSO)
Mar 10, 2026
I review my research group''s work to date on the design, processing, performance, and key physics of state-of-the-art vertical cavity surface emitting lasers (VCSELs) for modern and
Aug 06, 2025
Presently, there are two main promising approaches: the hybrid integration of the optical resonator with high-contrast metal-dielectric mirrors (hereinafter referred to as HC-VCSEL) and the
Jan 15, 2026
Abstract The results of the development of vertical-cavity surface emitting lasers based on Al $${}_{x}$$ Ga $${}_{1-x}$$ As and In $${}_{y}$$ Ga $${}_{1-y}$$ As solid solutions are
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