Journal ArticleDOI
Measuring mode propagation losses of integrated optical waveguides: a simple method.
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TLDR
A semiautomatic method is described for measuring, fast and accurately, the mode propagation losses of planar or channel waveguides for integrated optical circuits and it is feasible over a broad range from low loss to high loss.Abstract:
A semiautomatic method is described for measuring, fast and accurately, the mode propagation losses of planar or channel waveguides for integrated optical circuits. It involves a video camera aided by a microcomputer, and the real-time measurement is feasible over a broad range from low loss (<1 dB/cm) to high loss (of the order of 102 dB/cm). We examined the propagation properties of several optical waveguides prepared by sputtering or ion migration.read more
Citations
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Journal ArticleDOI
Loss in low-finesse Ti:LiNbO3 optical waveguide resonators
R. Regener,W. Sohler +1 more
TL;DR: In this article, the contrast of Fabry-Perot resonances in low-finesse (end face polished) integrated optical resonators is measured to determine an upper limit of the waveguide attenuation coefficient.
Journal ArticleDOI
Optically pumped planar waveguide lasers, Part I: Fundamentals and fabrication techniques
TL;DR: In this article, the state-of-the-art in terms of fabrication tools used for producing waveguide lasers is reviewed from the aspects of the processes and the materials involved.
Journal ArticleDOI
Multiwaveguide implantable probe for light delivery to sets of distributed brain targets.
TL;DR: A multiwaveguide probe capable of independently delivering light to multiple targets along the probe axis, thus enabling versatile optical control of sets of distributed brain targets is demonstrated.
Journal ArticleDOI
Optical waveguide fabrication in z-cut lithium niobate (LiNbO3) using femtosecond pulses in the low repetition rate regime
TL;DR: In this paper, two different types of waveguide structures are fabricated in z-cut lithium niobate (LiNbO3) using focussed femtosecond pulses.
Journal ArticleDOI
Precision measurements of the optical attenuation profile along the propagation path in thin-film waveguides.
TL;DR: An experimental technique for precision measurements of the optical attenuation profile along a propagation path in thin-film waveguides is reported, and the repeatability and accuracy of the measured attenuation per unit length is typically better than 5%, even with losses below 0.1 dB/cm.
References
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Journal ArticleDOI
Fiber waveguides: a novel technique for investigating attenuation characteristics
M. K. Barnoski,S. M. Jensen +1 more
TL;DR: The time dependence of the light backscattered within the fiber as the pulse travels down the waveguide is recorded and the total loss may be determined.
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Optical waveguides formed by thermal migration of ions in glass.
TL;DR: The ion-exchange process has proved to be a simple means for fabricating tapered-edge couplers and low loss films can be fabricated using this process and the modal losses in these films do not agree with those losses predicted by existing theories.
Journal ArticleDOI
Characteristics of Optical Guided Modes in Lossy Waveguides
TL;DR: A generalized procedure is presented that permits an accurate description of metal boundaries at optical frequencies and it is found that, with increasing buffer thickness, TM(N) modes undergo a continuous transformation to becomeTM(N+1).
Journal ArticleDOI
B.S.T.J. briefs: Sputtered glass waveguide for integrated optical circuits
J. E. Goell,R. D. Standley +1 more
TL;DR: In this article, the authors report on the realization of low-loss, thin glass films which can be used for circuit fabrication Methods of preparing planar films and waveguides having rectangular cross section are described along with the techniques used in evaluating their optical characteristics.
Journal ArticleDOI
Spectral Response of Low-Loss Optical Waveguides
Donald B. Keck,A. R. Tynes +1 more
TL;DR: Independent attenuation measurements from 600 nm to 1060 nm have been made on low-loss waveguides and bulk cladding glass, using both laser and scanning-prism monochromator sources, and assumptions too small to be precisely measured in the bulk glass measured in them.