Journal ArticleDOI
Polarization-independent interferometric optical-time-domain reflectometer
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TLDR
In this paper, a polarization independent interferometric optical-time-domain reflectometer is proposed and demonstrated, which is composed of a superluminescent diode and a fiber coupler which combines a polarization-maintaining fiber and a conventional singlemode fiber to achieve a polarizationindependent spatial profile of the reflectance in a single-mode fiber or waveguide sample.Abstract:
A polarization-independent interferometric optical-time-domain reflectometer is proposed and demonstrated. The experimental setup is composed of a superluminescent diode and a fiber coupler which combines a polarization-maintaining fiber and a conventional single-mode fiber to achieve a polarization-independent spatial profile of the reflectance in a single-mode fiber or waveguide sample. The polarization independence and the reliability of the measured reflectivity, were confirmed, and the measurement of loss and birefringence in an optical waveguide from its reflectance profile is demonstrated. The influence of dispersion in the fibers on the spatial resolution of the reflectometer is also discussed. >read more
Citations
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Journal ArticleDOI
Speckle in Optical Coherence Tomography
TL;DR: Four speckle-reduction methods-polarization diversity, spatialcompounding, frequency compounding, and digital signal processing-are discussed and the potential effectiveness of each method is analyzed briefly with the aid of examples.
Patent
Method and apparatus for optical imaging with means for controlling the longitudinal range of the sample
Eric A. Swanson,David Huang,James G. Fujimoto,Carmen A. Puliafito,Charles P. Lin,Joel S. Schuman +5 more
TL;DR: In this article, a method and apparatus for performing optical imaging on a sample wherein longitudinal scanning or positioning in the sample is provided by either varying relative optical path lengths for an optical path leading to the sample and to a reference reflector, or by varying an optical characteristic of the output from an optical source applied to the apparatus.
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Methods and apparatus for forward-directed optical scanning instruments
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Method and apparatus for performing optical measurements using a fiber optic imaging guidewire, catheter or endoscope
Guillermo J. Tearney,Stephen A. Boppart,Brett E. Bouma,Mark E. Brezinski,Eric A. Swanson,James G. Fujimoto +5 more
TL;DR: In this paper, an endoscopic system for performing optical coherence tomography includes an optical radiation source; a reference optical reflector; a first optical path leading to the reference optical reflectedor; and a second optical path coupled to an endoscopy unit.
Journal ArticleDOI
Polarization-sensitive low-coherence reflectometer for birefringence characterization and ranging
TL;DR: In this article, a polarization-sensitive optical coherence-domain reflectometer capable of characterizing the phase retardation between orthogonal linear polarization modes at each reflection point in a birefringent sample is presented.
References
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Journal ArticleDOI
Polarization-maintaining fibers and their applications
Juichi Noda,K. Okamoto,Y. Sasaki +2 more
TL;DR: In this article, the classification of high-birefringent and low-birrringent fibers and their fabrication methods and characteristics are discussed in Section II and Section III, respectively.
Journal ArticleDOI
Polarization independent coherent optical receiver
TL;DR: In this paper, an optical heterodyne receiver for DPSK signals with an arbitrary polarization state was proposed, where the received signal was split between two orthogonal polarization axes and the resulting two signals were demodulated.
Journal ArticleDOI
Pulse delay measurements in the zero material dispersion wavelength region for optical fibers.
Leonard George Cohen,Chinlon Lin +1 more
TL;DR: Subnanosecond pulses in the 1120-1550-nm region are generated by multiple-order stimulated Raman scattering in a small core single-mode silica fiber pumped by a Q-switched and mode-locked Nd:YAG laser.
Journal ArticleDOI
Tailoring zero chromatic dispersion into the 1.5-1.6 μm low-loss spectral region of single-mode fibres
TL;DR: In this article, the authors have designed and fabricated singlemode silica fibres that have zero chromatic dispersion within the 1.5-1.6 μm low-loss spectral region by controlling their waveguide dispersion and dopant-dependent material dispersion.
Journal ArticleDOI
Low-loss high-silica single-mode channel waveguides
TL;DR: In this article, a low-loss high-silica single-mode channel optical waveguides of 0.1 dB/cm have been fabricated on crystal silicon substrates with fibre coupling losses of less than 0.05 dB by flame hydrolysis deposition and reactive ion etching.