The Single-Mode Condition for Silicon-on-Insulator Optical Rib Waveguides With Large Cross Section

Lousteau, Joris; Furniss, David; Seddon, Angela B.; Benson, T.M.; Vuković, Ana; Sewell, P.

doi:10.1109/jlt.2004.832427

Cited by 64 publications

(43 citation statements)

References 12 publications

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“…It has been shown, however, that large rib waveguides in SOI could be designed to be monomodal [9]. These waveguides have been studied extensively by a number of researchers [10]- [13] to find single-mode behavior and low-loss propagation. Large rib waveguides are interesting because they are multimicron in cross-sectional dimensions (of the order of 5 m) facilitating low-loss coupling to and from optical fibres.…”

mentioning

confidence: 99%

Design Rules for Single-Mode and Polarization-Independent Silicon-on-Insulator Rib Waveguides Using Stress Engineering

Milošević

Matavulj

Timotijević

et al. 2008

J. Lightwave Technol.

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Abstract-There is a trend towards miniaturization of silicon photonic circuits due to superior performance and small cost. Design rules that must be imposed on the geometry of optical waveguides to make them behave as polarization-independent and singlemode devices are well known for waveguides with relatively large cross sections and for some small cross-sectional rib waveguides with vertical sidewalls and an air top cladding. The influence of the top oxide cover on waveguide birefringence was analyzed recently, but only for relatively large cross-sectional waveguides. This paper reports simulations for both single-mode and polarization-independent behavior for small cross-sectional waveguides with variable rib width, etch depth, top oxide cover thickness, and sidewall angle. The results show that the stress-induced effects must be taken into account to satisfy both requirements. Design rules to maintain birefringence-free operation and to satisfy single-mode behavior for small rib silicon-on-insulator (SOI) waveguides are presented.

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mentioning

confidence: 99%

Design Rules for Single-Mode and Polarization-Independent Silicon-on-Insulator Rib Waveguides Using Stress Engineering

Milošević

Matavulj

Timotijević

et al. 2008

J. Lightwave Technol.

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“…The cross section of a SOI rib waveguide that we adopted is shown in Figure 1(b) with width W , rib height H, and slab height h. These structures can be either single-mode or multimode depending on the ratio of the dimensions W/H and h/H. In our case we consider the single-mode condition, as follows [12] …”

Section: Theoretical Modelingmentioning

confidence: 99%

Raman Amplification and Superluminal Propagation of Ultrafast Pulses Based on Loop Silicon Waveguides: Theoretical Modeling and Performance

Wu¹,

Luo²,

Zhang³

2008

PIER

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Abstract-In this paper, we report, for the first time to the best of our knowledge, the detailed modeling and performance of Raman amplification and superluminal propagation of weak ultrafast femtosecond optical pulses in nonlinear loop single mode silicon-oninsulator anomalously dispersive optical waveguides. Using the device, theoretical results for 100-fs signal optical pulse show that when the launch peak power of signal pulse is fixed at −10 dBm, the gain value up to 30 dB can be achieved, and the delay time of superluminal propagation can also be adjusted by changing the system parameters, including initial chirp and peak power of pump pulse, initial delay time between pump and signal pulses, and waveguide length, etc.

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“…This implies that the eigenmodes of such an optical waveguide are usually in a hybrid configuration (both major and minor components co-exist). Due to the small dimension of the rib waveguides proposed in this paper, the minority component cannot be considered as negligible as in the case of large cross-section rib structures [11]. Consequently, the full-vectorial approach is used for the computation of the propagation mode for a waveguide feature size smaller than several micrometers.…”

Section: Soi Rib Structurementioning

confidence: 99%

Optically Switched Arrayed Waveguide Gratings Using Phase Modulation

Lim

Png

Gardès

et al. 2006

IEEE J. Select. Topics Quantum Electron.

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Abstract-This paper reports a theoretical analysis of novel optically switched arrayed waveguide gratings (AWG) based on a silicon-on-insulator (SOI) platform using phase modulation. The phase modulation can be achieved by integrating optical phase modulators across the grating arms, incorporating four-way splitters and combiners to reduce the thermal optic effect. The phase modulator operates by injecting the free carriers to change the refractive index in the guiding region, hence allowing different wavelengths to route to different output waveguides. Also, with appropriate absorption caused by the free carriers, optical switching can be performed. We demonstrate by computer simulation the optical and electrical characteristics of the devices using a threedimensional (3-D) beam propagation method (BPM) (optical) and the two-dimensional (2-D) device simulation package SILVACO (electrical). The drive current necessary for switching the wavelength in question by one waveguide distance is approximately 0.17 mA/µm and the attenuation factor is approximately 1 dB. These devices are useful for broad application in both wavelengthdivision multiplexing (WDM) networks and photonics integrated circuits.

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The Single-Mode Condition for Silicon-on-Insulator Optical Rib Waveguides With Large Cross Section

Cited by 64 publications

References 12 publications

Design Rules for Single-Mode and Polarization-Independent Silicon-on-Insulator Rib Waveguides Using Stress Engineering

Design Rules for Single-Mode and Polarization-Independent Silicon-on-Insulator Rib Waveguides Using Stress Engineering

Raman Amplification and Superluminal Propagation of Ultrafast Pulses Based on Loop Silicon Waveguides: Theoretical Modeling and Performance

Optically Switched Arrayed Waveguide Gratings Using Phase Modulation

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