Essays about: "VCSEL"

Showing result 1 - 5 of 6 essays containing the word VCSEL.

1. 1. Prototype Instrumentation for Frequency Domain – Functional Near Infrared Spectroscopy

   University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Author : Rohit Rathnam Nareshkumar; [2022]
   Keywords : Neurofeedback; Frequency domain fNIRS; vertical-cavity surface-emitting laser; silicon photomultiplier;

   Abstract : Frequency domain functional near infrared spectroscopy (FD-fNIRS) is a tissue optical measurement technique used to measure absolute haemoglobin concentrations in brain tissue. This work is intended to be the first step in the development of a wearable, low-cost FD-fNIRS device for neurofeedback applications. READ MORE

3. 2. Integration of compact optical interfaces

   University essay from Högskolan i Halmstad

   Author : Jakob Karlsson; Darian Raspudic; [2021]
   Keywords : ;

   Abstract : The authors' project consisted of looking at Saab's current optical solution and present a conceptual design for a more compact, integrated optical solution. The project started with the authors learning, through reading scientific articles on various databases, about the optical signal, optical transceiver, and optical connectors to fully understand the problem definition. READ MORE

4. 3. Physical modeling of optical modulators for optical link analysis : Optical link analysis in silicon photonics technologies

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Daniele Poggi; [2019]
   Keywords : Silicon photonics; physical modeling; ring modulator; electro-absorption modulator; optical modulator; optical link system; power consumption; Kiselfotonik; fysisk modellering; ringmodulator; elektroabsorptionsmodulator; optisk modulator; optiskt länksystem; strömförbrukning;

   Abstract : According to the 2018 Ethernet Roadmap projections, the requirements for high speed links keep increasing every year, always keeping an eye on the energy per bit consumption of the communication system. The Ethernet requirements are estimated to reach 1Tbps by 2022-2025. READ MORE

5. 4. Implementing a Probe with Laser Doppler and Heater

   University essay from Linköpings universitet/Elektroniska Kretsar och System

   Author : Karin Marneson; [2017]
   Keywords : ;

   Abstract : With laser Doppler flowmetry, blood flow can be measured in the smallest blood vessels in the body. Perimed AB is a company that develops instruments for microvascular diagnostics and want to develop a 15-mm probe with laser Doppler and heater. READ MORE

6. 5. Simulation Study of Epitaxially Regrown Vertical-Cavity Surface-Emitting Lasers

   University essay from KTH/Skolan för informations- och kommunikationsteknik (ICT)

   Author : Xiaoyue Wu; [2011]
   Keywords : vertical-­‐cavity surface-emitting laser VCSEL ; III-V compound semiconductor; PICS3D; finite element FE effective index method EIM ;

   Abstract : The vertical-cavity surface-emitting laser or VCSEL is a special type of diode laser, which has established itself in optoelectronic applications asa low-cost, high-quality miniaturized light source. The development of VCSELs can be largely promoted with support from computer simulations. READ MORE