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# IEEE Journal of Quantum Electronics

## Filter Results

Displaying Results 1 - 25 of 70
• ### Semiconductor laser stabilization by external optical feedback

Publication Year: 1991, Page(s):352 - 372
Cited by:  Papers (38)
| | PDF (2263 KB)

A report is presented on a general theory describing the effect of external optical feedback on the steady-state noise characteristics of single-mode semiconductor lasers. The theory is valid for arbitrarily strong feedback and arbitrary optical feedback configuration and spectrum. A generalized Langevin rate equation is derived. The equation is, in general, infinite order in d/dt constituting an ... View full abstract»

• ### Integrated optic adiabatic devices on silicon

Publication Year: 1991, Page(s):556 - 566
Cited by:  Papers (56)  |  Patents (24)
| | PDF (1196 KB)

A study of integrated optic devices based on adiabatic principles is reported. The components are a 3-dB coupler, a full coupler, a polarization splitter, a wavelength multiplexer, and two mode shape transformers. All components were fabricated from doped silica and silicon nitride films on silicon substrates. Results are given for an adiabatic full coupler and an adiabatic 3-dB coupler, an asymme... View full abstract»

• ### Reduced-confinement GaAlAs tapered waveguide antennas for enhanced far-field beam directionality

Publication Year: 1991, Page(s):687 - 695
Cited by:  Papers (14)  |  Patents (1)
| | PDF (941 KB)

Reduced-confinement tapered waveguide antennas are shown to produce reductions of >35% in the transverse far-field beam divergence for radiation emitted from GaAlAs slab waveguides, resulting in far-field beams as narrow as 8.2 degrees full width at half-maximum (FWHM) along the direction perpendicular to the wafer surface. Reduced confinement of the guided mode near the output endface is achieved... View full abstract»

• ### Guided-wave optical bistability in indium antimonide thin films

Publication Year: 1991, Page(s):809 - 816
Cited by:  Papers (10)
| | PDF (893 KB)

Various grating configurations used to obtain optical bistability in a guided-wave format are discussed and experimentally demonstrated using indium antimonide planar waveguides. The theory of nonlinear diffusive distributed input grating coupling, is presented. The enhancement afforded by additional feedback mechanisms is verified, both with an externally coupled counterpropagating beam and with ... View full abstract»

• ### Nonlinear semiconductor Bragg reflection waveguide structures

Publication Year: 1991, Page(s):824 - 829
Cited by:  Papers (14)
| | PDF (591 KB)

The waveguiding properties of finite Bragg reflection waveguides have been investigated in both linear and nonlinear regimes. The guiding properties of both linear and nonlinear BRWs have been shown to depend quite sensitively upon the core layer dimension. A feature of the analysis of the nonlinear case has been the use of Jacobian elliptic functions of complex modulus and argument to give an ana... View full abstract»

• ### Theoretical study of parametric frequency and wavefront conversion in nonlinear holograms

Publication Year: 1991, Page(s):830 - 835
Cited by:  Papers (27)
| | PDF (460 KB)

Third-order mixing of arbitrary beams of pump and second-harmonic light gives rise to a spatially periodic DC polarization whose noninversion symmetry and periodicity are correct for quasi-phase matching of the pump and second harmonic. Under appropriate conditions in certain materials, e.g., optical fibers, X(2) forms in proportion to this DC polarization, resulting in a nonli... View full abstract»

• ### Numerical modeling of bistable laser diodes with saturable absorbers

Publication Year: 1991, Page(s):817 - 823
Cited by:  Papers (12)
| | PDF (552 KB)

The authors examine and compare the various numerical models commonly used in the literature for the simulation of bistable laser diodes with saturable absorbers. The models have been improved through consideration of the coupling and the interface effect between the pumped and absorbing regions. Comparisons to experimental results are presented and discussed View full abstract»

• ### Linewidth enhancement factor and high temperature performance of 1.48 μm strained InGaAs-InGaAsP multiquantum well laser

Publication Year: 1991, Page(s):678 - 680
Cited by:  Papers (5)
| | PDF (280 KB)

The linewidth enhancement factor α in strained InGaAs-InGaAsP multiquantum well (MQW) lasers emitting near 1.48 μm has been experimentally determined. The measured α at the lasing wavelength is found to be 2 compared to a value of 5.5 and 3.5 typically observed in InGaAsP-InP regular double heterostructure (DH) lasers and MQW lasers, respectively. The small α shows that single... View full abstract»

• ### A Cerenkov microlaser

Publication Year: 1991, Page(s):753 - 759
Cited by:  Papers (9)  |  Patents (1)
| | PDF (584 KB)

A Cerenkov microlaser (CML) is proposed. The device uses an electron beam and a semiconducting-film-loaded open, quasi-optical resonator to produce coherent, electromagnetic radiation at submillimeter and far-infrared wavelengths. General expressions for the tuning, gain, and constraints due to beam quality are used, together with optical and material considerations to establish operating characte... View full abstract»

• ### Computer simulations of fully cascadable picosecond all-optical logic using nonlinear semiconductor etalons

Publication Year: 1991, Page(s):804 - 808
Cited by:  Papers (1)  |  Patents (1)
| | PDF (492 KB)

A paired semiconductor etalon scheme for all-optical decision making is proposed, and the results of computer simulations of the device concept are presented. In the envisioned architecture, a two-wavelength logic-gate etalon is operated in series with an upconverter' etalon to allow cascadable operation on a picosecond time-scale. The paired device achieves a fanout of at least two, as well as g... View full abstract»

• ### High-speed frequency modulation and switching of tunable distributed feedback lasers with two active segments

Publication Year: 1991, Page(s):668 - 677
Cited by:  Papers (13)
| | PDF (824 KB)

The author extends the analysis of high-speed frequency modulation in DFB lasers with two active segments. The strong FM response in such lasers is very different, in both magnitude and phase, for the red- and blue-shifted static tuning regimes. The author introduces the frequency step-response function to characterize in the time domain the dynamics of laser frequency switching from one value to ... View full abstract»

• ### Lateral modes of broad area semiconductor lasers: theory and experiment

Publication Year: 1991, Page(s):312 - 320
Cited by:  Papers (51)
| | PDF (852 KB)

Calculations of the lateral modes of an ideal broad area laser, including the nonlinear interaction between the carriers and the optical field, are made. The results include periodically modulated near fields and single- and double-lobed far fields similar to those previously measured. The unsaturable losses are higher and quantum efficiencies are lower than those determined from plane-wave approx... View full abstract»

• ### InGaAs metal-semiconductor-metal photodetectors for long wavelength optical communications

Publication Year: 1991, Page(s):737 - 752
Cited by:  Papers (226)  |  Patents (44)
| | PDF (1592 KB)

A review is presented of the properties of interdigitated metal-semiconductor-metal (MSM) Schottky barrier photodetectors based on the InGaAs-InP material system, and the performance achieved by experimental devices is discussed. The experimental work concentrates on the barrier-enhanced lattice-matched InAlAs-InGaAs device grown by low pressure organometallic chemical vapor deposition (OMCVD), wh... View full abstract»

• ### Electrical discharge and laser gain characteristics of a coaxial discharge CO2 laser stabilized by a transverse rotating magnetic field

Publication Year: 1991, Page(s):476 - 479
Cited by:  Papers (2)
| | PDF (364 KB)

The feasibility of creating laser excitation in a diffusion cooled annular coaxial geometry CO2 laser by a longitudinal DC electrical discharge stabilized with a rotating transverse magnetic field has been demonstrated. The uniformity of the electrical discharge in the annular cross section could be enhanced considerably with the application of the magnetic field. A peak laser small-sig... View full abstract»

• ### Photorefractive intermodal exchangers in optical fiber

Publication Year: 1991, Page(s):796 - 803
Cited by:  Papers (9)
| | PDF (672 KB)

Photorefractive intermodal exchangers (PRIME) in optical fiber are optically written refractive index gratings that couple two copropagating modes of the fiber. The author examines the characteristic feature of these devices. He shows how mode coupling automatically occurs at the wavelength λirr used to write the refractive index grating, and calculates the bandwidth of mode coup... View full abstract»

• ### High-speed III-V semiconductor intensity modulators

Publication Year: 1991, Page(s):654 - 667
Cited by:  Papers (153)  |  Patents (41)
| | PDF (1360 KB)

A description is given of a GaAs-AlGaAs, loaded-line traveling-wave modulator which has achieved bandwidths up to 36 GHz to date with low (<6 V) drive voltage into a 50 Ω device. The loaded-line design concept is able to combine the high efficiency of vertical p-i-n-type phase modulators with a velocity-matched 50 Ω structure to obtain very high bandwidth/voltage ratios. At 1150 nm,... View full abstract»

• ### Analysis and design of high-speed high-efficiency GaAs-AlGaAs double-heterostructure waveguide phase modulator

Publication Year: 1991, Page(s):726 - 736
Cited by:  Papers (35)  |  Patents (6)
| | PDF (1064 KB)

A P-p-i-n-N, GaAs-AlGaAs, TE/TM mode phase modulator, which has both the high phase shift efficiency of a p-n homojunction modulator and the high speed associated with a P-i-N modulator, is considered by incorporating p- and n-GaAs buffer layers and utilizing the higher order effects in these layers. The device structure is analyzed by considering the individual contributions of both the electroop... View full abstract»

• ### Analysis of injection-locked gain-guided diode laser arrays

Publication Year: 1991, Page(s):396 - 401
Cited by:  Papers (17)
| | PDF (424 KB)

A new model for injection-locked gain guided laser arrays is proposed. Diffraction-limited and single-lobe operation of injection-locked arrays is attributed to coherent summation of several transverse modes that are phase locked by injection. The model predicts far-field and near-field patterns, locking bandwidth, beam-steering properties, and locked output power. The effects of varying the maste... View full abstract»

• ### Practical model for gas temperature effects on CO2 lasers

Publication Year: 1991, Page(s):471 - 475
Cited by:  Papers (3)  |  Patents (1)
| | PDF (412 KB)

An analytical and experimental investigation on the effect of gas temperature on convection flow CO2 lasers is presented. A simple and practical model neglecting the population of lower laser levels is proposed and examined by experiments. The model indicates simply that the gas temperature affects the inherent threshold discharge power'. Appropriateness of the model has been proven re... View full abstract»

• ### A waveguide directional coupler with a nonlinear coupling medium

Publication Year: 1991, Page(s):788 - 795
Cited by:  Papers (26)
| | PDF (636 KB)

An all-optical switch using a waveguide directional coupler with a nonlinear coupling medium is shown. At low input power, it performs as a linear directional coupler; but at higher input powers, the coupling length increases, thus reducing coupling. For coupling lengths near multiples of the linear coupling length, switching can occur from a crossed-over state at low power to a straight-through c... View full abstract»

• ### Steady holographic gratings formed in photorefractive materials: influence of material parameters

Publication Year: 1991, Page(s):509 - 515
Cited by:  Papers (8)
| | PDF (592 KB)

An approach previously developed by M. Carrascosa and F. Agullo-Lopez (ibid. vol.QE-22, p.1369-75, 1986) to deal with the erasure kinetics of holographic gratings in photorefractive materials is extended to the problem of writing. The explicit inclusion of the donor concentration in the photovoltaic drift term allows for a more rigorous analysis of its role. The steady-state solution for arbitrary... View full abstract»

• ### Performance tests of angled fiber 3 dB couplers made with drawn silica substrates

Publication Year: 1991, Page(s):543 - 548
| | PDF (680 KB)

A report is presented on a series of tests performed on angled-fiber-type optical couplers fabricated with drawn silica substrates. The couplers use a multilayer dielectric coating, applied directly on an angled fiber interface. Measured performance of the device shows an average near-end crosstalk of -48 and an excess of 0.46 dB. The use of an all silica design for the substrate holding the fiber... View full abstract»

• ### Determination of the spectrally resolved gain profile of HeSe+ laser lines from the beat frequency spectrum

Publication Year: 1991, Page(s):454 - 458
Cited by:  Papers (6)
| | PDF (432 KB)

Several laser lines are selected from the multiline spectrum of a CW HeSe+ laser by an intracavity birefringent filter. The different axial modes of a laser line move across the gain profile because of statistical variations of the resonator length. The laser modes are recorded as beat frequencies in the GHz region by a fast photodiode and a spectrum analyzer. Variable losses are insert... View full abstract»

• ### Semiconductor photonic integrated circuits

Publication Year: 1991, Page(s):641 - 653
Cited by:  Papers (178)  |  Patents (40)
| | PDF (1400 KB)

Semiconductor photonic integrated circuits (PICs) refer to that subset of optoelectronic integrated circuits (OEICs) which focus primarily on the monolithic integration of optically interconnected guided-wave optoelectronic devices. The principal motivation for PIC research is the expected cost reduction and packaging robustness associated with replacing individually aligned, single-mode optical c... View full abstract»

• ### Transferred-electron device as a large-signal laser driver

Publication Year: 1991, Page(s):423 - 427
Cited by:  Papers (5)
| | PDF (456 KB)

A description is presented of the use of a transferred-electron device (TED) as a laser driver for optical communication. This concept is particularly advantageous for the long-wavelength range around 1.3 and 1.55 μm, since InGaAs, lattice-matched to InP, offers the largest current pulse originating from the TE-effect. Moreover large-signal control, inherent pulse shaping at bit rates in the Gb... 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
Aaron R. Hawkins
Brigham Young University