Radiation from concentric‐circle grating, surface‐emitting planar waveguides: The volume current method

1994 ◽  
Vol 64 (23) ◽  
pp. 3077-3079 ◽  
Author(s):  
Rebecca H. Jordan ◽  
Dennis G. Hall
Keyword(s):  
Current Method ◽  
Concentric Circle ◽  
Planar Waveguides ◽  
Volume Current

Volume current method for analysis of tilted fiber gratings

2001 ◽  
Vol 19 (10) ◽  
pp. 1580-1591 ◽  
Author(s):  
Y. Li ◽  
M. Froggatt ◽  
T. Erdogan
Keyword(s):  
Current Method ◽  
Fiber Gratings ◽  
Volume Current

Volume current method for modeling light scattering by inhomogeneously perturbed spheres

1995 ◽  
Vol 12 (5) ◽  
pp. 905 ◽  
Author(s):  
Steven C. Hill ◽  
Hasan I. Saleheen ◽  
Kirk A. Fuller
Keyword(s):  
Light Scattering ◽  
Current Method ◽  
Volume Current

scholarly journals Study of crystalline defect induced optical scattering loss inside photonic waveguides in UV–visible spectral wavelengths using volume current method

2019 ◽  
Vol 27 (12) ◽  
pp. 17262 ◽  
Author(s):  
Hong Chen ◽  
Houqiang Fu ◽  
Jingan Zhou ◽  
Xuanqi Huang ◽  
Tsung-Han Yang ◽  
...  
Keyword(s):  
Current Method ◽  
Optical Scattering ◽  
Scattering Loss ◽  
Photonic Waveguides ◽  
Uv Visible ◽  
Crystalline Defect ◽  
Volume Current

Optimizing grating-based devices with the volume current method

2004 ◽  
Author(s):  
Robert B. Walker ◽  
Stephen J. Mihailov ◽  
Ping Lu ◽  
Dan Grobnic
Keyword(s):  
Current Method ◽  
Volume Current

scholarly journals Effects of roughness and resonant-mode engineering in all-dielectric metasurfaces

Nanophotonics ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 1401-1410 ◽  
Author(s):  
Hao Yang ◽  
He Liu ◽  
Boxiang Song ◽  
Yuanrui Li ◽  
Deming Meng ◽  
...  
Keyword(s):  
Incident Angle ◽  
Fdtd Method ◽  
Current Method ◽  
Resonant Mode ◽  
Near Ir ◽  
Numerical Predictions ◽  
Resonant Modes ◽  
Volume Current ◽  
Dielectric Metasurface ◽  
Ir Light

AbstractThe development of all-dielectric metasurfaces vigorously prompts the applications of optical metasurfaces for the visible and near-IR light range. Compared to IR or longer wavelength light, visible and near-IR light have shorter wavelengths. As a result, surface roughness and imperfections of all-dielectric metasurfaces have larger scattering or absorption of visible and near-IR light, thereby directly affecting the performance of an all-dielectric metasurface. In this article, a volume-current method is adopted to study the effect of metasurface roughness. Numerical calculations based on the finite difference time domain (FDTD) method are also used to study the relationship between the effects of metasurface roughness and the optical resonant modes. Numerical predictions based on our theoretical studies fit the experimental data well. Further, the effect of different roughness levels on the all-dielectric metasurface performance is predicted. More importantly, a method utilizing resonant-mode engineering to enhance the metasurface performance (e.g. incident angle insensitivity) is also proposed and demonstrated. This work deepens our understanding of the working mechanism of all-dielectric metasurfaces and paves the way for their use in a broad spectrum of applications.

A Guide to Coding and Billing for the Audiological Management of Patients Receiving Ototoxic Medical Treatments

2019 ◽  
Vol 4 (5) ◽  
pp. 936-946
Author(s):  
Dawn Konrad-Martin ◽  
Neela Swanson ◽  
Angela Garinis
Keyword(s):  
Otoacoustic Emissions ◽  
Best Practice ◽  
Private Insurance ◽  
Monitoring Program ◽  
Current Method ◽  
International Classification Of Diseases ◽  
Ethical Practice ◽  
Party Payer ◽  
High Frequency Audiometry ◽  
Icd 10

Purpose Improved medical care leading to increased survivorship among patients with cancer and infectious diseases has created a need for ototoxicity monitoring programs nationwide. The goal of this report is to promote effective and standardized coding and 3rd-party payer billing practices for the audiological management of symptomatic ototoxicity. Method The approach was to compile the relevant International Classification of Diseases, 10th Revision (ICD-10-CM) codes and Current Procedural Terminology (CPT; American Medical Association) codes and explain their use for obtaining reimbursement from Medicare, Medicaid, and private insurance. Results Each claim submitted to a payer for reimbursement of ototoxicity monitoring must include both ICD-10-CM codes to report the patient's diagnosis and CPT codes to report the services provided by the audiologist. Results address the general 3rd-party payer guidelines for ototoxicity monitoring and ICD-10-CM and CPT coding principles and provide illustrative examples. There is no “stand-alone” CPT code for high-frequency audiometry, an important test for ototoxicity monitoring. The current method of adding a –22 modifier to a standard audiometry code and then submitting a letter rationalizing why the test was done has inconsistent outcomes and is time intensive for the clinician. Similarly, some clinicians report difficulty getting reimbursed for detailed otoacoustic emissions testing in the context of ototoxicity monitoring. Conclusions Ethical practice, not reimbursement, must guide clinical practice. However, appropriate billing and coding resulting in 3rd-party reimbursement for audiology services rendered is critical for maintaining an effective ototoxicity monitoring program. Many 3rd-party payers reimburse for these services. For any CPT code, payment patterns vary widely within and across 3rd-party payers. Standardizing coding and billing practices as well as advocacy including letters from audiology national organizations may be necessary to help resolve these issues of coding and coverage in order to support best practice recommendations for ototoxicity monitoring.

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