In this work, the architecture of a high-power InAlGaP/InGaP vertical-cavity surface-emitting laser (VCSEL) with an emission wavelength 680 nm was studied. The design quantum well, including well thickness, indium composition, and barrier aluminum composition targeting wavelength, elaborately optimized. Moreover, influences leakage current, temperature dependence optical gain, resonance mode ga...

The ever increasing demand for interconnect bandwidth in embedded parallel processors has motivated the development of photonic communications technologies that effectively support short-distance links. Electrooptical I/O to and from VLSI chips is one such photonic technology. A multiring architecture that exploits optical I/O on and off chip is described in [1]. At the heart of the system is a...

We present a new class of surface emitting lasers utilizing a single-layer high-index-contrast subwavelength grating, instead of conventional DBR. Single polarization mode emission with low threshold current and 1mW output power was obtained at 850nm wavelength. The realization of VCSELs has been significantly limited by the choice of material available for making highly reflective distributed ...

We have designed three ASICs for possible applications in a new pixel layer (Insertable B-Layer or IBL) for the ATLAS detector for the first phase of the LHC luminosity upgrade. The ASICs are a high-speed driver for the VCSEL (VerticalCavity Surface-Emitting Laser), a receiver/decoder to decode the signal received at the PIN diode to extract the data and clock, and a clock multiplier to produce...

We experimentally demonstrate successful performance of VCSEL-based WDM link supporting advanced 16-level carrierless amplitude/phase modulation up to 1.25 Gbps, over 26 km SSMF with spectral efficiency of 4 bit/s/Hz for application in high capacity PONs.

We report on the characterization and validation of custom-designed 894.6 nm vertical-cavity surface-emitting lasers (VCSELs), for use in miniature Cs atomic clocks based on coherent population trapping (CPT). The laser relative intensity noise (RIN) is measured to be 1 × 10(-11) Hz(-1) at 10 Hz Fourier frequency, for a laser power of 700 μW. The VCSEL frequency noise is 10(13) · f(-1) Hz(2)/Hz...

The use of vertical-cavity surface-emitting laser (VCSEL) arrays for implementation of incoherent source superresolution is presented. The method uses an interferometer setup to obtain superresolution in a single step. The novelty of the method relies on the use of a VCSEL array as the light source, which provides a set of coherent sources which are mutually incoherent. The technique accomplish...

Injection locking has been actively researched for its possibility to improve laser performance for both digital and analog applications. When a modulated follower laser (also termed “slave” laser) is locked to the master laser, its nonlinear distortion and frequency chirp may be reduced. As well, the resonance frequency can increase to several times higher than its free running case. In this p...

The feasibility of utilising low-cost, un-cooled vertical cavity surface-emitting lasers (VCSELs) as intensity modulators in real-time optical OFDM (OOFDM) transceivers is experimentally explored, for the first time, in terms of achievable signal bit rates, physical mechanisms limiting the transceiver performance and performance robustness. End-to-end real-time transmission of 11.25 Gb/s 64-QAM...