Chip based common-path optical coherence tomography system with an on-chip microlens and multi-reference suppresion algorithm

Lantian Chang, Nicolas Weiss, Ton van Leeuwen, Markus Pollnau, R.M. de Ridder, Kerstin Worhoff, Vinod Subramaniam, Johannes S. Kanger

Research output: Contribution to journalArticleAcademicpeer-review

4 Citations (Scopus)
47 Downloads (Pure)

Abstract

We demonstrate an integrated optical probe including an on-chip microlens for a common-path swept-source optical coherence tomography system. This common-path design uses the end facet of the silicon oxynitride waveguide as the reference plane, thus eliminating the need of a space-consuming and dispersive on-chip loop reference arm, thereby obviating the need for dispersion compensation. The on-chip micro-ball lens eliminates the need of external optical elements for coupling the light between the chip and the sample. The use of this lens leads to a signal enhancement up to 37 dB compared to the chip without a lens. The light source, the common-path arm and the detector are connected by a symmetric Y junction having a wavelength independent splitting ratio (50/50) over a much larger bandwidth than can be obtained with a directional coupler. The signal-to-noise ratio of the system was measured to be 71 dB with 2.6 mW of power on a mirror sample at a distance of 0.3 mm from the waveguide end facet. Cross-sectional OCT images of a layered optical phantom sample are demonstrated with our system. A method, based on an extended Fourier-domain OCT model, for suppressing ghost images caused by additional parasitic reference planes is experimentally demonstrated.
Original languageUndefined
Article number12635
Pages (from-to)-
JournalOptics express
Volume24
Issue number12
DOIs
Publication statusPublished - 2016

Keywords

  • METIS-316747
  • IR-100564

Cite this

Chang, Lantian ; Weiss, Nicolas ; van Leeuwen, Ton ; Pollnau, Markus ; de Ridder, R.M. ; Worhoff, Kerstin ; Subramaniam, Vinod ; Kanger, Johannes S. / Chip based common-path optical coherence tomography system with an on-chip microlens and multi-reference suppresion algorithm. In: Optics express. 2016 ; Vol. 24, No. 12. pp. -.
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abstract = "We demonstrate an integrated optical probe including an on-chip microlens for a common-path swept-source optical coherence tomography system. This common-path design uses the end facet of the silicon oxynitride waveguide as the reference plane, thus eliminating the need of a space-consuming and dispersive on-chip loop reference arm, thereby obviating the need for dispersion compensation. The on-chip micro-ball lens eliminates the need of external optical elements for coupling the light between the chip and the sample. The use of this lens leads to a signal enhancement up to 37 dB compared to the chip without a lens. The light source, the common-path arm and the detector are connected by a symmetric Y junction having a wavelength independent splitting ratio (50/50) over a much larger bandwidth than can be obtained with a directional coupler. The signal-to-noise ratio of the system was measured to be 71 dB with 2.6 mW of power on a mirror sample at a distance of 0.3 mm from the waveguide end facet. Cross-sectional OCT images of a layered optical phantom sample are demonstrated with our system. A method, based on an extended Fourier-domain OCT model, for suppressing ghost images caused by additional parasitic reference planes is experimentally demonstrated.",
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Chip based common-path optical coherence tomography system with an on-chip microlens and multi-reference suppresion algorithm. / Chang, Lantian; Weiss, Nicolas; van Leeuwen, Ton; Pollnau, Markus; de Ridder, R.M.; Worhoff, Kerstin; Subramaniam, Vinod; Kanger, Johannes S.

In: Optics express, Vol. 24, No. 12, 12635, 2016, p. -.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Chip based common-path optical coherence tomography system with an on-chip microlens and multi-reference suppresion algorithm

AU - Chang, Lantian

AU - Weiss, Nicolas

AU - van Leeuwen, Ton

AU - Pollnau, Markus

AU - de Ridder, R.M.

AU - Worhoff, Kerstin

AU - Subramaniam, Vinod

AU - Kanger, Johannes S.

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N2 - We demonstrate an integrated optical probe including an on-chip microlens for a common-path swept-source optical coherence tomography system. This common-path design uses the end facet of the silicon oxynitride waveguide as the reference plane, thus eliminating the need of a space-consuming and dispersive on-chip loop reference arm, thereby obviating the need for dispersion compensation. The on-chip micro-ball lens eliminates the need of external optical elements for coupling the light between the chip and the sample. The use of this lens leads to a signal enhancement up to 37 dB compared to the chip without a lens. The light source, the common-path arm and the detector are connected by a symmetric Y junction having a wavelength independent splitting ratio (50/50) over a much larger bandwidth than can be obtained with a directional coupler. The signal-to-noise ratio of the system was measured to be 71 dB with 2.6 mW of power on a mirror sample at a distance of 0.3 mm from the waveguide end facet. Cross-sectional OCT images of a layered optical phantom sample are demonstrated with our system. A method, based on an extended Fourier-domain OCT model, for suppressing ghost images caused by additional parasitic reference planes is experimentally demonstrated.

AB - We demonstrate an integrated optical probe including an on-chip microlens for a common-path swept-source optical coherence tomography system. This common-path design uses the end facet of the silicon oxynitride waveguide as the reference plane, thus eliminating the need of a space-consuming and dispersive on-chip loop reference arm, thereby obviating the need for dispersion compensation. The on-chip micro-ball lens eliminates the need of external optical elements for coupling the light between the chip and the sample. The use of this lens leads to a signal enhancement up to 37 dB compared to the chip without a lens. The light source, the common-path arm and the detector are connected by a symmetric Y junction having a wavelength independent splitting ratio (50/50) over a much larger bandwidth than can be obtained with a directional coupler. The signal-to-noise ratio of the system was measured to be 71 dB with 2.6 mW of power on a mirror sample at a distance of 0.3 mm from the waveguide end facet. Cross-sectional OCT images of a layered optical phantom sample are demonstrated with our system. A method, based on an extended Fourier-domain OCT model, for suppressing ghost images caused by additional parasitic reference planes is experimentally demonstrated.

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