A method for detecting sub-wavelength features by means of a multimode waveguide and a mode splitting photonic IC

Fransoo, Frederik; Thourhout, Dries Van; Landschoot, Liesbet Van; Verbiest, A.; Parys, Wouter Van; Vandaele, P.; Baets, Roel

doi:10.1109/leos.2002.1159524

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…Recently, it was proposed the use optical waveguide to achieve reading in the intermediate field [10][11][12][13][14] , and the use of multimode rectangular multi-mode waveguide as an imaging system 13,14 . Considering the latter system, we analyze its reading capability and how it could be used for optical recording purposes, and according to the simulations, very high resolution can be achieved.…”

Section: Introductionmentioning

confidence: 99%

Parallel recording with optical waveguide array

et al. 2004

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We present an analysis of the reading capability of a novel optical pickup consisting of a single-mode and a multi-mode rectangular waveguide. According to the simulations, if one has prior information about the structure of the disk, superresolution readout could be achieved. The proposed system has the advantage to be compact and should be straightforward to be extended to arrays. The working distance of this optical pickup can be adapted from near-to farfield by changing the length of the multi-mode waveguide.

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Section: Introductionmentioning

confidence: 99%

Parallel recording with optical waveguide array

et al. 2004

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Performance analysis of a multimode waveguide-based optical disk readout system

2004

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We propose a method to improve the optical resolution to read out optical disks, without making the spot size on the disk smaller than the diffraction limit. The idea is to reconstruct the bit pattern from the complete field profile (including amplitude and phase) of the light reflected from the disk. We measure the phase and amplitude information by picking up the wave front into different modes of a bimodal waveguide. Once picked up, these modes can be split by a photonic integrated circuit to be measured by separate detectors. By combining the information from the responses from the different modes, we can improve the bit error rate substantially.

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A method for detecting sub-wavelength features by means of a multimode waveguide and a mode splitting photonic IC

Cited by 2 publications

References 2 publications

Parallel recording with optical waveguide array

Parallel recording with optical waveguide array

Performance analysis of a multimode waveguide-based optical disk readout system

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