| TOPIC: Optical Waveguides |
| Manuscript Title: Dispersion Relation and Field Distribution for a Chiral Slab Waveguide |
| Manuscript Id: IJMOT-2006-6-94 |
| Abstract: We examine the dispersion relation and the field profile for a chiral slab waveguide. The waveguide
consists of the homogeneous chiral media in the film and cladding. The electromagnetic fields are decomposed into the right and left circularly polarised fields. The guided mode expressions are derived by the wave equations and the solutions in the film and the cladding are obtained. Using
the boundary condition at the interfaces yields the
eigenvalue equation for the hybrid guided modes. The
dispersion relation and the guided mode profile are examined numerically. |
| Authors: M. Yokota, Y. Yamanaka |
Category: OpticalTechnology Submitted On: 6/8/2006 Full Text [PDF] Pg.Nos: 623-627
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| Manuscript Title: Full-Vectorial Optical Waveguide Eigenmode Solvers Based on Multidomain Pseudospectral Methods |
| Manuscript Id: IJMOT-2006-6-134 |
| Abstract: A new full-vectorial pseudospectral mode solver based on multidomain pseudospectral methods for optical waveguides with arbitrary step-index profile is presented. Both Legendre and Chebyshev collocation methods are employed. The multidomain advantage helps in proper fulfillment of dielectric interface conditions, which is essential in achieving high numerical accuracy. The solver is applied to the calculation of guided modes on optical fiber, D-shaped fiber, and rib waveguide, and comparison with analytical results or reported ones based on other methods is made. It is demonstrated that numerical accuracy in the effective index up to the remarkable 10–8 order can be easily achieved. |
| Authors: Hung-chun Chang, Po-Jui Chiang, Chu-Sheng Yang, Chin-Lung Wu, and Chun-Hao Teng |
Category: OpticalTechnology Submitted On: 6/16/2006 Full Text [PDF] Pg.Nos: 628-632
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| Manuscript Title: Behavior of Reflected Powers of Radiation Field in Shorter Wavelength Region in Various Kinds of 3-D Optical Waveguides with Periodic Structure |
| Manuscript Id: IJMOT-2006-6-160 |
| Abstract: In the investigation of wavelength characteristics on reflected power of dominant guided mode in various kinds of 3-D periodic waveguides, the increase of reflected radiation field in the shorter wavelength region has been one of problems, and some suppression techniques have been considered. In this paper, behaviors of such a radiation field in 3-D waveguides with periodic structure which are index-modulation type and lamellar grating type with rectangular teeth and with sinusoidal surface relief are investigated using Fourier series expansion method. According to the numerical results, their characteristics behaviors for each periodic waveguide are made clear, and results for suppression of the radiation fields are also exemplified. |
| Authors: Tokuo Miyamoto, Michiko Momoda, Kiyotoshi Yasumoto |
Category: OpticalTechnology Submitted On: 7/3/2006 Full Text [PDF] Pg.Nos: 633-638
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| Manuscript Title: Physics of waveguide isolator |
| Manuscript Id: IJMOT-2006-7-199 |
| Abstract: The paper discusses physical aspects of the waveguide isolator based on the transverse magneto-optical (MO) effect. The isolator operating on TM mode provides a unidirectional transfer of electromagnetic energy from the laser source to the optical fiber. The device consists of an active semiconductor multilayer sandwiched between semiconductor buffer and semiconductor substrate with a MO active ferromagnetic alloy layer deposited on the buffer. The optical gain in the semiconductor multilayer compensates the optical losses due to the reduced reflectivity on the magnetic wall of the waveguide. The characteristics of the device are analyzed with a model planar four-layer waveguide. |
| Authors: Tomuo Yamaguchi, Jaromir Pistora, Kamil Postava, Pierre Beauvillain, Martin Veis |
Category: OpticalTechnology Submitted On: 7/23/2006 Full Text [PDF] Pg.Nos: 639-643
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| Manuscript Title: Realization of Polarization-Insensitive Optical Polymer Waveguide Devices |
| Manuscript Id: IJMOT-2006-7-201 |
| Abstract: We review our studies on the realization of polarization-insensitive optical polymer waveguide devices based on the approach of using thermal control to balance the geometric and stress birefringence in the waveguides. We demonstrate the idea with ridge/rib waveguides, Bragg gratings, directional couplers, and long-period gratings. Polarization-dependent loss compensation is also highlighted. |
| Authors: K S Chiang, S Y Cheng, H P Chan, Q Liu, K P Lor, C K Chow |
Category: OpticalTechnology Submitted On: 7/23/2006 Full Text [PDF] Pg.Nos: 644-650
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