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The fabrication of 2D InP-based photonic crystal lasers accurately aligned with SOI wire waveguides will be presented. Low threshold pulsed lasing operation is achieved by pumping via the SOI waveguide.
In this context, two-dimensional photonic crystals (2DPCs) have excited a lot of interest for their potential use as active photonic devices. PCs are a periodic arrangement of materials with different refractive indices where the periodicity is of the order of the wavelength of light, which confers them with exciting possibilities to manipulate light signals within small volumes of materials. In this...
We report on the fabrication of InP-based 2D photonic crystal lasers operating around lambda = 1.55 mum at room temperature, integrated with and evanescently coupled to Silicon-On-Insulator waveguides. Pulsed laser operation is obtained from a line defect photonic crystal waveguide accurately aligned (< 30 nm) on top the SOI circuitry. This active-passive integration is demonstrated using an adhesive...
Silicon photonics is a rapidly developing platform for integrated optics. Combining the low-loss passive silicon photonic circuitry with III-V based active optical functionality, we can combine the best of both worlds. We investigate a new optical platform based on the heterogeneous integration of InP-based active 2D photonic crystals (PCs) on SOI waveguides.
Temporal characteristics of band-edge photonic crystal lasers were explored with high resolution up-conversion system. The InGaAs/InP photonic crystal laser operates at room temperature at 1.55 mum with temporal responses indicating modulation speeds greater than 25 GHz.
Finite difference time domain (FDTD) and finite element (FE) frequency domain methods are used to study the propagation of arbitrary chirped pulses in photonic crystal (PhC) waveguide. An arbitrary chirped pulse is derived from a separate Semiconductor optical amplifier (SOA) model and is passed through a mini-stop band (MSB) in a photonic crystal waveguide. Good agreement is shown between the FDTD...
We demonstrate a high-resolution dispersion characterization technique for photonic waveguide structures. Direct measurement of 120 mum long photonic crystal waveguides, at a band edge of 1.55 mum, demonstrates group delay dispersion of 0.4 ps2.
In this paper, an arbitrary chirped pulse (ACP)-finite difference time domain (FDTD) method is developed where pulse data can be read in from a data file. This has allowed the FDTD code to be used in combination with a semiconductor optical amplifier (SOA) model to study 2R regeneration using 2D photonic crystal waveguide for sub-picosecond pulses
In this paper, the investigation of light propagating inside such a structure is usually limited by both the diffraction limit and the absence of radiating light. We have solved this by investigating a photonic crystal waveguide with a phase-sensitive time-resolved near-field scanning microscope. Photonic crystals are promising structures for controlling light, because the light has to obey Bloch's...
We directly visualized pulses as they propagate through a photonic crystal waveguide with both temporal and spatial resolution. The amplitude of the local field reveals multi-mode behavior and the existence of long-lived nonlocalized modes
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