论文信息 - Comparison of bending losses in integrated optical circuits.

Comparison of bending losses in integrated optical circuits.

We present measured losses in waveguide sections that are caused by connecting two parallel noncollinear straight waveguides and compare the results with theory. Two different offset transitions are considered, one composed of a straight section with sharp corner bends and the other exhibiting a smooth S-shaped transition. These two types of transitions are compared with each other to determine when each has the lowest loss. In general, sharp corner bends are preferred for small offsets, whereas larger offsets exhibit lower loss with the S-bend design. The experimental results were measured for 3-microm-wide Ti-diffused LiNbO 3 single-mode waveguides.

[1] D. Marcuse. Radiation losses of parabolic-index slabs and fibers with bent axes. , 1978, Applied optics.

[2] William K. Burns,et al. Ti diffusion in Ti : LiNbO3 planar and channel optical waveguides , 1979 .

[3] I. A. White,et al. Radiation from bends in optical waveguides: the volume-current method , 1979 .

[4] Mitsunobu Miyagi,et al. Bending losses of dielectric rectangular waveguides for integrated optics , 1978 .

[5] W. Burns,et al. Mode dispersion in diffused channel waveguides by the effective index method. , 1977, Applied optics.

[6] W. Burns,et al. Modes in diffused optical waveguides of arbitrary index profile , 1975 .

[7] Dietrich Marcuse,et al. Curvature loss formula for optical fibers , 1976 .

[8] D Marcuse,et al. Length optimization of an S-shaped transition between offset optical waveguides. , 1978, Applied optics.

[9] W. Burns,et al. End fire coupling between optical fibers and diffused channel waveguides. , 1977, Applied optics.

[10] L. Lewin,et al. Radiation from Curved Dielectric Slabs and Fibers , 1974 .

[11] E. Kuester,et al. Surface-wave radiation loss from curved dielectric slabs and fibers , 1975 .

[12] H F Taylor,et al. Losses at corner bends in dielectric waveguides. , 1977, Applied optics.

[13] H F Taylor,et al. Power loss at directional change in dielectric waveguides. , 1974, Applied optics.

[14] E. Marcatili. Bends in optical dielectric guides , 1969 .