# IEEE Journal of Quantum Electronics

## Filter Results

Displaying Results 1 - 25 of 49
• ### Two-dimensional GaAs photonic switch array with direct gain and high contrast

Publication Year: 1993, Page(s):396 - 402
| | PDF (612 KB)

The fabrication and design of a 4×4 surface-normal reflection photonic switch array, with an operating principle based on the change of the gain coefficient in GaAs, is described. A 3-μm-thick GaAs active layer and carrier confinement layers are sandwiched between a semiconductor multilayer reflector and an antireflection window. The beryllium ion implantation technique is used to make a ... View full abstract»

• ### Measurements and theory of correlation between terminal electric noise and optical noise in a two-section semiconductor laser

Publication Year: 1993, Page(s):386 - 395
Cited by:  Papers (9)  |  Patents (2)
| | PDF (916 KB)

The correlation between the terminal voltage noise and the intensity and frequency noise is characterized experimentally and theoretically for a two-section distributed Bragg reflector (DBR) laser. An all-electric feedback scheme for noise reduction is proposed and analyzed theoretically View full abstract»

• ### Double-barrier resonant tunneling transport model

Publication Year: 1993, Page(s):327 - 339
Cited by:  Papers (10)
| | PDF (1164 KB)

A semiquantum transport model for electron transport in the resonant tunneling diode (RTD) is presented. The total electrons tunneling through the RTD are partitioned into two parts. The first is the coherent tunneling electrons, which do not experience any scattering except by the barriers during tunneling. These electrons are described by the damped resonant tunneling model. The second is the in... View full abstract»

• ### Smart spatial light modulators using liquid crystals on silicon

Publication Year: 1993, Page(s):699 - 714
Cited by:  Papers (119)  |  Patents (11)
| | PDF (1408 KB)

Smart pixels are discussed in terms of the following neurally inspired functions: memory, sensors, intrapixel circuitry, interpixel communication, and optical outputs. The types of liquid crystals and electronic circuits used in VLSI/liquid crystal arrays, and their electrooptic properties are reviewed. Examples of electrically addressed and optically addressed liquid crystal smart pixels, and res... View full abstract»

• ### VCSE laser transmitters for parallel data links

Publication Year: 1993, Page(s):635 - 644
Cited by:  Papers (14)  |  Patents (35)
| | PDF (1128 KB)

The major issues associated with using vertical cavity surface emitting laser (VCSEL)-based transmitter arrays for parallel data links are examined. An assumption is made that only limited optimization of the individual links is permitted, and to the extent that the required circuits are shared by many channels. An analysis of bit-error ratios, based on measured laser parameter variations across t... View full abstract»

• ### Dependence of high-speed properties on the number of quantum wells in 1.55 μm InGaAs-InGaAsP MQW λ/4-shifted DFB lasers

Publication Year: 1993, Page(s):355 - 360
Cited by:  Papers (28)  |  Patents (2)
| | PDF (560 KB)

The dependence of intrinsic dynamic properties, such as relaxation oscillation frequency, damping K-factor, and spectral chirping under 10-Gb/s direct modulation, on the number of quantum wells is systematically investigated in 1.55-μm multiquantum-well λ/4-shifted distributed-feedback lasers. The theoretical and experimental results indicate that the dependence of the above three factor... View full abstract»

• ### Homodyne optical phase locking of resonant cavity coupled semiconductor lasers

Publication Year: 1993, Page(s):374 - 385
Cited by:  Papers (10)
| | PDF (1076 KB)

Two confocal Fabry-Perot cavity coupled semiconductor laser diodes (CFP-LDs) have been constructed for optical phase-locking experiments. Their FM noise suppression characteristics were calculated and compared with measurements of FM noise using an optical resonator as the optical frequency discriminator (FM noise suppression ratio 39 dB). Spectral linewidth was measured and evaluated, and frequen... View full abstract»

• ### A model for surface recombination velocity and lifetime of semiconductor lasers

Publication Year: 1993, Page(s):322 - 326
Cited by:  Papers (2)
| | PDF (360 KB)

A simple and powerful relationship is presented for estimating the lifetime of continuous-wave (CW) diode lasers. Accelerated aging tests can directly be translated into the relationship. A model for the surface recombination velocity is developed based on the physical and chemical phenomenon governing the change of the surface recombination velocity. This model, together with a criterion for no t... View full abstract»

• ### An efficient 1.46 μm thulium fiber laser via a cascade process

Publication Year: 1993, Page(s):303 - 306
Cited by:  Papers (18)
| | PDF (296 KB)

Continuous wave (CW) lasing in a thulium-doped fluorozirconate fiber at 1.46 μm with a 20% slope efficiency was observed. Simultaneous lasing at 1.86 μm with 29% slope efficiency depopulates the normally long lived 1.46-μm terminal level. It is shown that the cascade process can increase the slope efficiency ηs, of the 1.45-μm transition by a factor of ten and the 1.86-&... View full abstract»

• ### Novel analog self-electrooptic-effect devices

Publication Year: 1993, Page(s):678 - 698
Cited by:  Papers (31)  |  Patents (10)
| | PDF (1840 KB)

Circuits and modes of operation for quantum-well self-electrooptic-effect devices (SEEDs) are proposed that allow analog processing of optical images and arrays. Analog functions performed include addition, subtraction, uniform amplification, replication, spatial differentiation, convolution, cross-correlation, and optically controllable weights for matrix-vector processors or neural networks. Man... View full abstract»

• ### A complexity analysis of smart pixel switching nodes for photonic extended generalized shuffle switching networks

Publication Year: 1993, Page(s):619 - 634
Cited by:  Papers (10)
| | PDF (1396 KB)

The architectural tradeoffs found in the use of smart pixels for nodes within photonic switching interconnection networks are discussed. The particular networks of interest within the analysis are strictly nonblocking extended generalized shuffle (EGS) networks. Several performance metrics are defined for the analysis, and the effect of node size on these metrics is studied. Optimum node sizes are... View full abstract»

• ### Incorporation of strain into a two-dimensional model of quantum-well semiconductor lasers

Publication Year: 1993, Page(s):346 - 354
Cited by:  Papers (14)
| | PDF (672 KB)

The effect of strain quantum wells was incorporated into a 2-D semiconductor laser simulator. An anisotropic parabolic band structure was used to approximate the valence band structure obtained from a Lutinger-Kohn k.p theory to facilitate the simulation. It is shown that, with a proper choice of the anisotropic effective masses, a good approximation of the strained band structure can be obtained.... View full abstract»

• ### Analysis of distributed-feedback lasers using a recursive Green's functional approach

Publication Year: 1993, Page(s):368 - 373
Cited by:  Papers (11)
| | PDF (432 KB)

A method is presented for obtaining the exact propagation constants (resonance wavelengths and threshold gains) for distributed-feedback lasers. The method is based on computing the exact Green's function for resonant cavities using a recursive Green's function approach. The net threshold gains of distributed-feedback lasers are calculated and compared with the results obtained using conventional ... View full abstract»

• ### Analytical solution of the subbands and absorption coefficients of AlGaAs-GaAs hyperbolic quantum wells

Publication Year: 1993, Page(s):311 - 321
Cited by:  Papers (15)
| | PDF (856 KB)

A hyperbolic function is used to model the carrier confinement potential profile of a disordered Al0.3Ga0.7As-GaAs single quantum well produced by interdiffusion of group III atoms across the well-barrier interfaces. The confined states are determined analytically for the hyperbolic profile, and their wavefunctions and energies compare well with the results obtained numerical... View full abstract»

• ### Wireless focal planes On the road to amacronic sensors'

Publication Year: 1993, Page(s):801 - 813
Cited by:  Papers (9)  |  Patents (1)
| | PDF (2104 KB)

Progress in microoptic technology and concepts that blend epitaxial layers of analog circuitry, microoptics, microlaser arrays, and detector arrays with neural retinal designs are discussed. The sensor developments that can lead to tightly coupled and adaptive focal plane arrays are reviewed. Characteristic amacrine functions, such as motion detection, edge enhancement, and space-variant dynamic r... View full abstract»

• ### Three-terminal operation analysis of exciton absorption reflection switches (EARS's)

Publication Year: 1993, Page(s):775 - 784
Cited by:  Papers (7)  |  Patents (1)
| | PDF (736 KB)

The three-terminal operation of photonic-switching arrays consisting of multiple-quantum-well (MQW) modulators and heterojunction phototransistors (HPTs) connected with distributed Bragg reflectors (DBRs) is analyzed. NOR and OR gate characteristics are achieved by modifying the electrical connection between the MQW modulators and HPTs. A memory function is obtained by controlling DBR transmission... View full abstract»

• ### Batch fabrication and operation of GaAs-AlxGa1-x As field-effect transistor-self-electrooptic effect device (FET-SEED) smart pixel arrays

Publication Year: 1993, Page(s):670 - 677
Cited by:  Papers (73)  |  Patents (5)
| | PDF (800 KB)

The structure, processing, and performance of arrays of integrated field-effect transistor-self-electrooptic effects devices (FET-SEEDs) consisting of doped-channel field-effect transistors, multiple quantum-well (MQW) modulators, and p-i-n MQW detectors are discussed. The performance of the FETs and SEEDs such as gm and contrast, is equivalent to that obtained when they are ma... View full abstract»

• ### VSTEP-based smart pixels

Publication Year: 1993, Page(s):757 - 768
Cited by:  Papers (26)  |  Patents (1)
| | PDF (976 KB)

The design features and characteristics of a laser-mode vertical-to-surface transmission electro-photonic (VSTEP) device with high-intensity light output and narrow optical beam divergence are discussed. It is shown that a 20-μm square VSTEP with an optimized vertical cavity structure demonstrates a low optical switching energy of 2.2 pJ, together with a low threshold current. In order to lower... View full abstract»

• ### The Michelson resonator free-electron laser. I. Passive mode structure and mode decay

Publication Year: 1993, Page(s):452 - 464
Cited by:  Papers (10)
| | PDF (992 KB)

A general analysis of the evolution of phase locking in an RF linac-driven Michelson resonator free-electron laser (FEL) is presented. By providing a delay of one RF period in the secondary arm of the interferometer, successive optical pulses can be coupled at the beamsplitter, so that they build up from noise with a definite phase relationship. Phase locking is described in terms of longitudinal ... View full abstract»

• ### General coupled-mode analysis of Cerenkov-radiation-type second-harmonic generation in channel and fiber waveguides

Publication Year: 1993, Page(s):525 - 537
Cited by:  Papers (8)
| | PDF (1088 KB)

Coupled-mode analysis of Cerenkov-radiation-type second-harmonic generation, using channel and fiber waveguides, is presented from the viewpoint of device design. Nonlinear coupled-mode equations generally applicable for various waveguide configurations are derived and solved by considering the effects of pump-power depletion, waveguide loss, and effects of nonlinear gratings. Analytical expressio... View full abstract»

• ### Parallel interconnection through an optical fiber using phase conjugation mirror acceptable for optical data pattern

Publication Year: 1993, Page(s):613 - 618
Cited by:  Papers (9)
| | PDF (524 KB)

A class of optical parallel interconnections is proposed in which a two-dimensional data pattern is directly transmitted through a multimode fiber. It is demonstrated using an optically addressed spatial light modulator that functions as a data input port and a phase conjugation mirror. The interconnection technology is shown to be effective for two-dimensional data transmission between optical pr... View full abstract»

• ### Indistinct threshold laser operation in a pnpn vertical to surface transmission electrophotonic device with a vertical cavity

Publication Year: 1993, Page(s):403 - 410
Cited by:  Papers (10)
| | PDF (744 KB)

The vertical to surface transmission electrophotonic device has a laser cavity covered with plated gold, which has high reflectivity. The laser light is emitted from the distributed Bragg reflector (DBR) with no gold. Consequently, spontaneous emission remains in the laser cavity, and the carriers are regenerated. The injected carriers are converted to light and spontaneous emission is reconverted... View full abstract»

• ### Modified Airy function method for the analysis of tunneling problems in optical waveguides and quantum-well structures

Publication Year: 1993, Page(s):340 - 345
Cited by:  Papers (24)
| | PDF (476 KB)

A simple method for the analysis of tunneling through an arbitrary one-dimensional potential barrier, based on the modified Airy function approach, is presented. Truncated step-linear, step-exponential, parabolic, and quartic potential barriers are considered. The results are compared with those obtained by the conventional WKBJ, modified WKBJ, and matrix methods. The effect of the truncation leve... View full abstract»

• ### An integrated, optically powered, optoelectronic smart' logic pixel for interconnection and computing applications

Publication Year: 1993, Page(s):715 - 726
Cited by:  Papers (8)  |  Patents (2)
| | PDF (1036 KB)

An architecture for optoelectronic interconnection and computing applications, based on the concept of supplying local power to several locations on a 2-D array of circuits using optical means, is described. Optical powering has the advantage of supplying power with reduced crosstalk while simplifying the layout complexity of the arrays. The concept is demonstrated using an integrated and opticall... View full abstract»

• ### Implementation of multiplicative lateral inhibition in a GaAs sensory neural-network photodetector array

Publication Year: 1993, Page(s):645 - 654
Cited by:  Papers (4)
| | PDF (1020 KB)

An integrated circuit (IC) implementation of a multiplicative lateral inhibition (MLI) sensory neural network applied to a linear, 30-element photodetector array is described. The neural cells and the photodetector elements were fabricated using a five-mask GaAs depletion-mode metal-semiconductor field-effect transistor (MESFET) process. Unilateral interconnections between neighboring neural cells... View full abstract»

## Aims & Scope

The IEEE Journal of Quantum Electronics is dedicated to the publication of manuscripts reporting novel experimental or theoretical results in the broad field of the science and technology of quantum electronics.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Prof. Hon Ki Tsang
Chinese University of Hong Kong