Low-Voltage Silicon Mach-Zehnder Modulator Operating at High Temperatures without Thermo-Electric Cooling

2016 ◽  
Author(s):  
Kazuhiro Goi ◽  
Norihiro Ishikura ◽  
Hiroki Ishihara ◽  
Shinichi Sakamoto ◽  
Kensuke Ogawa ◽  
...  
Keyword(s):  
High Temperatures ◽  
Low Voltage ◽  
Thermo Electric ◽  
Mach Zehnder Modulator

A Self-Starting 70 mV-1 V, 65% Peak Efficient, TEG Energy Harvesting Chip with 5 ms Startup Time

2016 ◽  
Vol 26 (03) ◽  
pp. 1750040
Author(s):  
Arun Kumar Sinha
Keyword(s):  
Peak Power ◽  
Low Voltage ◽  
Input Voltage ◽  
Cmos Technology ◽  
Voltage Source ◽  
Thermo Electric ◽  
Electric Generator ◽  
Measurement Results ◽  
Startup Time ◽  
Work Up

This paper presents design and measurement results of a DC–DC converter, intended to harvest energy from a thermo-electric generator (TEG). The prototype chip was fabricated in 130[Formula: see text]nm CMOS technology. The designed converter can extract maximum power from a TEG, without using an input capacitor ([Formula: see text] or a closed loop maximum peak power tracking circuit to regulate the input voltage ([Formula: see text]. The converter uses a low voltage oscillator coupled with charge pump to directly power the auxiliary circuits; and auxiliary circuits drives two inductors in two half cycles of a clock pulse. The measurement has been performed by using a TEG, and a voltage source (50–200[Formula: see text]mV) with a series resistance of 5[Formula: see text]ohms. The result shows that the prototype can self-starts from 70[Formula: see text]mV with 5[Formula: see text]ms startup time and can work up to a minimum of 50[Formula: see text]mV; and can extract, 57.2% (at 50[Formula: see text]mV) to 65% (at 200[Formula: see text]mV), of the available power.

scholarly journals Low-voltage quantum well microring-enhanced Mach-Zehnder modulator

2013 ◽  
Vol 21 (14) ◽  
pp. 16888 ◽  
Author(s):  
Hiroki Kaneshige ◽  
Rajdeep Gautam ◽  
Yuta Ueyama ◽  
Redouane Katouf ◽  
Taro Arakawa ◽  
...  
Keyword(s):  
Quantum Well ◽  
Low Voltage ◽  
Mach Zehnder Modulator

Low Voltage Microgripper for Single Cell Manipulation

2008 ◽  
Vol 57 ◽  
pp. 67-72 ◽  
Author(s):  
Belen Solano ◽  
Andrew J. Gallant ◽  
Gareth D. Greggains ◽  
David Wood ◽  
Mary Herbert
Keyword(s):  
Single Cell ◽  
High Temperatures ◽  
Low Voltage ◽  
Electrical Power ◽  
Cell Manipulation ◽  
Liquid Media ◽  
Biological Media ◽  
Conductive Materials ◽  
Improved Performance ◽  
Single Cell Manipulation

In this work, we present the characterisation of an electrothermally actuated microgripper that operates in both dry and liquid media, and shows improved performance versus existing devices. The microgripper, fabricated in a combination of polymeric (SU8) and conductive materials (Au), is able to produce displacements up to 110 μm in air and 30 μm in liquid. In both cases, the voltage and the electrical power required is minimal (less than 3 V and 180 mW respectively) and so both, high temperatures and electrolysis, are prevented. Micromanipulation experiments have successfully demonstrated the gripping, holding and transport of mice oocytes (approx. diameter 100 μm) in a biological media.

The Effect of Protective Coatings on the Oxidation Behavior of 6061Al/SiC Composite at High Temperatures

2011 ◽  
Vol 383-390 ◽  
pp. 3949-3953
Author(s):  
N.K. Udayashankar ◽  
S. Rajasekaran ◽  
Jagannath Nayak
Keyword(s):  
Composite Material ◽  
Grain Boundary ◽  
Oxidation Resistance ◽  
High Temperatures ◽  
Oxidation Behavior ◽  
Low Voltage ◽  
Protective Coatings ◽  
Measurement Techniques ◽  
Aluminum Coating ◽  
The Matrix

This paper analyses the effect of protective coatings on the oxidation behavior of 6061Al/SiC composite material at temperatures ranging from 500 to 800 K. Aluminum and AlCrN coatings are employed as protective coatings in order to improve the oxidation resistance of the composite. SEM, EDAX, XRD and oxidation measurement techniques are used to study the oxidation behavior and to characterize the composite specimens. Oxidation of the composite material without protective coatings is seen to be very rapid during the initial stages of exposure to the high temperatures but subsequently slowed down due to the formation of a protective surface layer of oxide. The oxidation was especially severe above 600 K. The interface between the matrix and reinforcement particles and the grain boundary regions of intermetallic precipitates in the matrix enhance this oxidation process since they provided sites for oxidation initiation. Aluminum coating on the composite obtained by DC magnetron sputtering technique and AlCrN coating obtained by low voltage electron beam evaporation technique reduce the oxidation rate effectively since the interface regions between the matrix and reinforcement, grain boundary regions of the matrix are unexposed to the atmosphere. Aluminum coating provides better oxidation resistance for 6061 Al/SiC composites.

scholarly journals Low voltage 25Gbps silicon Mach-Zehnder modulator in the O-band

2017 ◽  
Vol 25 (10) ◽  
pp. 11217 ◽  
Author(s):  
Diego Perez-Galacho ◽  
Charles Baudot ◽  
Tifenn Hirtzlin ◽  
Sonia Messaoudène ◽  
Nathalie Vulliet ◽  
...  
Keyword(s):  
Low Voltage ◽  
Mach Zehnder Modulator

Low-Voltage Mach–Zehnder Modulator with InGaAs/InAlAs Five-Layer Asymmetric Coupled Quantum Well

2012 ◽  
Vol 51 (4R) ◽  
pp. 042203 ◽  
Author(s):  
Taro Arakawa ◽  
Takehiro Hariki ◽  
Yoshimichi Amma ◽  
Masayasu Fukuoka ◽  
Motoki Ushigome ◽  
...  
Keyword(s):  
Quantum Well ◽  
Low Voltage ◽  
Mach Zehnder Modulator ◽  
Coupled Quantum Well

Low-Voltage, Vertical-Junction, Depletion-Mode, Silicon Mach-Zehnder Modulator with Complementary Outputs

2009 ◽  
Author(s):  
Michael R. Watts ◽  
William A. Zortman ◽  
Douglas C. Trotter ◽  
Ralph W. Young ◽  
Anthony L. Lentine
Keyword(s):  
Low Voltage ◽  
Mach Zehnder Modulator
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