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High power and semi-cooled (45°C) operation of 1.55-µm 43-Gbit/s electro-absorption modulator integrated DFB laser
2010 Edition, September 1, 2010 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

We developed a high power and semi-cooled 1.55-µm 43-Gbit/s EA/DFB laser and 2-km transmission was demonstrated at 45°C with +4.1-dBm fiber output power, 28% mask margin, and 14.1-dB...

AlGaInAs-InP C-band tunable DS-DBR laser for semi-cooled operation at 55°C
2008 Edition, September 1, 2008 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Digital supermode (DS) DBR lasers utilising an AlGaInAs based active region are demonstrated for full C-band operation (100 by 50 GHz spaced channels) at 55degC for semi-cooled applications.

Semi-cool Temperature Compensation Algorithm Based on the Double Exponential Model in the Ultrasonic Positioning System
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This paper proposes a semi-cool temperature compensation algorithm based on the double exponential model of the transient temperature rise curve to improve the performance of the three-dimensional (3D) ultrasonic positioning system. The error model of 3D...

Wide-tuning (65 nm) Semi-cooled (50°C) operation of a tunable laser based on a novel widely tunable filter
2011 Edition, March 1, 2011 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

A tunable laser based on a medium wavelength selectivity tunable filter named a lateral-grating-assisted lateral-co-directional-coupler was developed. A wide tuning range of over 65 nm with SMSR of over 35 dB was demonstrated at 50°C.

Long-Term Wavelength Reliability in Semi-Cooled 11.1 Gbps-80 km EAM-LDs for DWDM XFPs
2007 Edition, March 1, 2007 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

We have developed semi-cooled 11.1 Gbps-80 km EAM-LDs optimized for long-term wavelength reliability for DWDM applications. Estimated MTTF over 105 hours to 100 pm wavelength drift was demonstrated for the first time.

Hybrid Microcircuitry for 300°C Operation
1977 Edition, Volume 13, September 1, 1977 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Microelectronic instrumentation for geothermal well logging must operate in ambient temperatures up to 300°C for several hundred hours. This study involved an extensive survey of 25 to 300°C operation of resistors, capacitors, conductors, interconnections,...

Superjunction IGBT vs. FS IGBT for 200°C operation
2015 Edition, May 1, 2015 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Adverse effects on the temperature-dependent properties of Insulated Gate Bipolar Transistors (IGBTs) are often observed when the junction temperature exceeds 175°C. It is believed that attempts in enabling the operation of IGBTs at 200°C will inevitably introduce...

Modeling and control of a semi-batch cooling seeded crystallizer
2015 Edition, May 1, 2015 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

We present a mathematical model of semi-batch cooling seeded crystallization of α-lactose monohydrate. The crystallization dynamics are described by population, mass and energy balance equations including the phenomena of nucleation (crystal birth)...

Transit-Time Effects in Ultra-High-Frequency Class-C Operation
1947 Edition, Volume 35, January 1, 1947 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Transit-time effects in ultra-high-frequency triodes and tetrodes used in class-C operation are analyzed. Effects discussed are electron-transit reactance; electron-transit phase-delay angle; cathode back-heating; use of a screen grid to improve efficiency;...

Fiber optical chemical sensors rated for 800°C operation
2015 Edition, May 1, 2015 - Optical Society (The) (OSA)

A high-temperature fiber optical hydrogen sensor is demonstrated. The sensor is based on single-crystal sapphire fiber coated with nanostractured Pd-doped TiO2 thin film. The sensitivity of the sensor was evaluated for hydrogen concentrations varying from 0.02 % to 3% at temperature...

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