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A new fully reconfigurable integrated add-drop filter is proposed, overcoming the limitations in operational range exhibited by previous designs. It provides a 1.6 nm wavelength tuning range with 0.49 nm to 3.36 nm bandwidth tunability.
We present a simple and accurate method to improve both accuracy and precision for localized surface plasmon resonance biosensors based on gold nanotube structures. The finite difference time domain (FDTD) method and the nanoimprint lithography technique were used in simulating and fabricating the nanotubes, respectively. The method provides a direct measure for the refractive index and achieves an...
We propose a novel configuration to implement bandwidth-tunable add-drop filters using integrated contra directional grating assisted couplers with a bandwidth tunable from 8 nm to 16 nm. Measurement results of passive structures are presented and the tuning method is analyzed.
A new method for LRSPP wave excitation using Si-based grating couplers is proposed. We report a coupling efficiency of 32 % in design and 16.5 dB loss in measurement from optical fiber to the plasmon wave.
We introduce a novel bandwidth and wavelength-tunable switch which is a balanced MZI structure having two grating structures on each arm. The tunability is achieved by separate tuning of the gratings.
Low threshold, ultrahigh speed micro- and nanoscale lasers that can be directly integrated with optoelectronic and electronic components on a CMOS chip are in demand for future chip-level optical communications. In this regard, rolled-up semiconductor tube optical cavities, formed when coherently strained nanomembranes are selectively released from the host substrate, have emerged as a promising approach...
We present results on InGaAsP rolled-up microtube resonators with embedded InAs quantum dots with strong coherent emission at ∼ 1.55 μm. We also show coupling of these resonators to Silicon-on-Insulator waveguides.
Wavelength-spacing tunable multi-wavelength source by controlling the intermodal transitions induced via dynamic reconfiguration of a nested photonic crystal cavity, through optically induced free carriers, is proposed. Optical combs spanning the entire C-band are demonstrated numerically.
A hybrid III-V silicon evanescent laser with sidewalled gratings as the feedback element, and having 60% waveguide confinement is proposed. The device is fabricated using e-beam lithography, and low-temperature plasma assisted direct bonding.
Multi-wavelength Generation, by intermodal transitions induced via dynamically reconfiguring a heterostructure cavity embedded within a photonic crystal ring resonator, is proposed. Tailoring the structure, 13 generated frequencies spanning the S-L bands are demonstrated numerically.
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