A Novel Straight Arrayed Waveguide Grating With Linearly Varying Refractive-Index Distribution

A Recurrence Technique for Computing the Effective Indexes of the Guided Modes of Coupled Single-Mode Waveguides

“…Single-mode waveguide arrays are widely used in many photonic devices, including directional couplers, modulators, switches, arrayed waveguide gratings, modal and power splitters [1][2][3][4][5][6][7]. In most of these applications the device functionality depends primarily on the interaction of guided, as opposed to leaky or radiation, modes [8].…”

Simple estimation of strain distribution in narrow-stripe waveguide array fabricated by selective MOVPE

“…Recent studies report a wavelength demultiplexer and an optical deflector using arrayed GaInAs/InP MQW-based waveguides fabricated by selective MOVPE to form a variable waveguide thickness across the array [7][8][9]. Fabricating a waveguide array that has a certain expected characteristic requires understanding of strain in the GaInAs wells layer in MQW waveguides that are individually controlled over the array.…”

Large mask area effects in selective area growth

“…However, when the openings are surrounded by large mask areas in all directions, two-dimensional models often fail to explain the experimental data [5] and more sophisticated models tend to be too complicated in addition to heavy computational demand. There are also cases of asymmetric mask-opening pattern fields or small pattern fields lying close to each other within the effective diffusion lengths, which can exert interference effects on the adjacent fields [8,9]. Often such cases have not been taken into account in SAG modeling.…”

“…In such patterns a strong influence from the mask at the end of the openings leading to considerable longitudinal edge effects should be apparent. Besides, an interference effect can also be operative [8,9]. For these cases, the local distributions of the kinetic and transport effects cannot be neglected.…”