Abstract
We explore the frequency selective functionalities of a nonuniform PT-symmetric Bragg grating with modulated complex index profile. We start by assessing the possibility to achieve an efficient apodization of the PT-symmetric Bragg grating spectral response by using direct adaptations of the conventional apodization techniques. A particular emphasis is put on the binary type structures with different duty cycle variations. We subsequently propose a new efficient grating modulation technique allowing for largely improved reflection/transmission characteristics of the Bragg gratings. The overall intention of our approach is to adapt conventional Bragg gratings designs to improve a PT-symmetric case, fostering thus a new generation of active photonic devices.
Original language | English |
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Article number | 7434582 |
Journal | IEEE Journal of Selected Topics in Quantum Electronics |
Volume | 22 |
Issue number | 5 |
Number of pages | 7 |
ISSN | 1077-260X |
DOIs | |
Publication status | Published - 2016 |
Keywords
- ENGINEERING,
- OPTICS
- PHYSICS,
- NON-HERMITIAN HAMILTONIANS
- BRAGG GRATINGS
- GAIN/LOSS
- Integrated optoelectronics
- coupled mode analysis
- optical amplifiers
- PT-symmetry
- waveguides
- Electrical and Electronic Engineering
- Atomic and Molecular Physics, and Optics
- Bins
- Light amplifiers
- Photonic devices
- Waveguides
- Active photonic devices
- Apodization technique
- Coupled-mode analysis
- Frequency-selective
- Grating modulation
- PT symmetries
- Spectral properties
- Spectral response
- Bragg gratings
- Gratings, echelles
- Other optical system components
- light reflection
- light transmission
- optical modulation
- transmission characteristics
- active photonic devices
- reflection characteristics
- grating modulation technique
- binary type structures
- apodization
- modulated complex index profile
- nonuniform binary PT-symmetric Bragg grating
- frequency selective functionality
- duty-cycle methods
- spectral properties
- Gratings
- Indexes
- Modulation
- Artificial intelligence
- Couplings
- Refractive index