Rapidly reconfigurable optical phase encoder-decoders based on fiber Bragg gratings

Zhang, Zhaowei; Tian, C.; Mokhtar, M.R.; Petropoulos, P.; Richardson, David J.; Ibsen, M.

doi:10.1109/lpt.2006.875062

Cited by 16 publications

(2 citation statements)

References 5 publications

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“…The only parameter that is relatively simple to alter is the central frequency of operation, which is dependent on the temperature or the strain on the structure. Based on the possibility of altering the operation frequency of the grating, there have been attempts to attain programmable and reconfigurable components [98][99][100]. An example is the development of a second order optical differentiator based on linearly chirped FBG and a digital thermal print head [100].…”

Section: Discussionmentioning

confidence: 99%

Fiber Bragg Grating-Based Optical Signal Processing: Review and Survey

Fernández‐Ruiz

Carballar

2021

Applied Sciences

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This paper reviews the state of the art of fiber Bragg gratings (FBGs) as analog all-optical signal processing units. Besides the intrinsic advantages of FBGs, such as relatively low cost, low losses, polarization insensitivity and full compatibility with fiber-optic systems, they have proven to deliver an exceptional flexibility to perform any complex band-limited spectral response by means of the variation of their physical parameters. These features have made FBGs an ideal platform for the development of all-optical broadband filters and pulse processors. In this review, we resume the main design algorithms of signal processors based on FBGs, and we revisit the most common processing units based on FBGs and the applications that have been presented in the literature.

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Section: Discussionmentioning

confidence: 99%

Fiber Bragg Grating-Based Optical Signal Processing: Review and Survey

Fernández‐Ruiz

Carballar

2021

Applied Sciences

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“…Multilayer planar waveguide structures have been widely used in the implementation of variety of optical devices including distributed feedback lasers [1], TE-TM converters [2], waveguide polarizers [3], Bragg reflectors [4], directional couplers [5], antiresonance reflecting optical waveguide (ARROW) structures [6], broad-area semiconductor lasers [7], [8].…”

Section: Introductionmentioning

confidence: 99%

Computation of propagation characteristics in complex plane for multilayer optical waveguide

2019

University of Thi-Qar Journal of Science

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This paper provides a numerical simulation for determining the complex propagation constants of integrated optics waveguide. The waveguide under consideration may consist of any number of layers with complex indices due to gain and loss. A generalpurpose mode solver MAPLE program has been developed to implement the transfer matrix method, and then it applied to solving the multilayer waveguide dispersion equation in complex plane. Additionally, our program can be used to determine the electromagnetic mode structure including modal power, spatial distribution, mode size parameters, and the position of the modal peak power. Therefore, all necessary parameters for a wide range of laser devices can be calculated.

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Reconfigurable generation and measurement of mutually unbiased bases for time-bin qudits

Lukens

Islam

Lim

et al. 2018

Applied Physics Letters

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We propose a new method for implementing mutually unbiased generation and measurement of time-bin qudits using a cascade of electro-optic phase modulator -coded fiber Bragg grating pairs. Our approach requires only a single spatial mode and can switch rapidly between basis choices. We obtain explicit solutions for dimensions d = 2, 3, 4 that realize all d + 1 possible mutually unbiased bases and analyze the performance of our approach in quantum key distribution. Given its practicality and compatibility with current technology, our approach provides a promising springboard for scalable processing of high-dimensional time-bin states.Mutually unbiased bases (MUBs) are of fundamental importance in quantum mechanics. A collection of bases is called mutually unbiased if any eigenstate from one basis overlaps equally with all states from the other bases. Since a measurement result in one basis provides no predictive information about the outcome of a subsequent measurement in one of its mutually unbiased partners, 1,2 MUBs represent optimal choices for quantum state tomography in noisy environments 1,3 and guarantee security against eavesdropping in quantum key distribution (QKD). 4,5 Implementing MUBs experimentally can be challenging, especially in high-dimensional Hilbert spaces (dimension d > 2). For example, in time-bin encoding, the best known method for measuring states mutuallyunbiased with respect to single-time-bin wavepackets is to use nested delay interferometers (DIs). 6-8 This approach requires the use of d detectors and is difficult to scale to high d in a practical setting. Furthermore, passive DIs produce satellite pulses that reduce the probability of successful measurement to 1/d. 9,10 Therefore, a critical objective is to develop an approach for synthesizing time-bin MUBs that preserves single-spatial-mode quantum information processing, is rapidly reconfigurable, and enables measurements with high success probability. Here we propose and analyze a novel configuration for generating and measuring quantum photonic states prepared in various time-bin MUBs using a cascade of electro-optic phase modulator (EOM) -coded fiber Bragg grating (FBG) pairs (see Fig. 1). We find explicit solutions of (d + 1)-element MUB families for d = 2, 3, 4 and simulate performance of a multibasis QKD system. Importantly, our approach can be implemented using current technology and offers the first truly single-mode paradigm for time-bin MUBs. a) Electronic mail: lukensjm@ornl.gov IN OUT FBG 1 EOM 1 FBG N EOM N Time-Bin Transformation W UNIT CELL UNIT CELL FIG. 1. Proposed system. The input state propagates through a series of N unit cells, each comprising an EOM and coded FBG. Ideally the input-to-output path produces a one-to-one mapping between states from different bases.In our design, we impose the requirement that a physical configuration must transform between all MUBs available in a d-dimensional space. This criterion is motivated by high-dimensional QKD, as both increasing the dimension d and employing (d + 1)-basi...

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Rapidly reconfigurable optical phase encoder-decoders based on fiber Bragg gratings

Cited by 16 publications

References 5 publications

Fiber Bragg Grating-Based Optical Signal Processing: Review and Survey

Fiber Bragg Grating-Based Optical Signal Processing: Review and Survey

Computation of propagation characteristics in complex plane for multilayer optical waveguide

Reconfigurable generation and measurement of mutually unbiased bases for time-bin qudits

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