For high-bit-rate long-haul fiber optic communications, the avalanche photodiode (APD) is
frequently the photodetector of choice owing to its internal gain, which provides a sensitivity …

A semiconductor injection laser that differs in a fundamental way from diode lasers has been
demonstrated. It is built out of quantum semiconductor structures that were grown by …

We perform quantum key distribution (QKD) over a single fibre in the presence of four
classical channels in a C-band dense wavelength division multiplexing (DWDM) …

New results on the physics of tunneling in quantum well heterostructures and its device
applications are discussed. Following a general review of the field in the Introduction, in the …

This paper reviews the electronic transport properties of compositionally graded materials.
Band gap grading is a powerful tool for engineering the energy band diagram of a device …

Publisher Summary This chapter discusses the avalanche photodiodes (APDs) and
important developments in these systems. The microscopic foundations of the physics of …

Epitaxial III–V semiconductor heterostructures are key components in modern
microelectronics, electro-optics, and optoelectronics. With superior semiconducting …

High-speed avalanche photodiodes and high-sensitivity receivers are vital components for
future multigigabit-per-second lightwave transmission systems. We review theoretical and …

A novel planar separate absorption, charge sheet, grading and multiplication avalanche
photodiode (APD) structure incorporating a partial charge sheet in the device periphery is …

Semiconductor heterojunctions with ideal lattice matching, well-controlled in fabrication,
yield devices that cannot be achieved in any other way. These devices include modulated …