SOURCE OF SIDELOBE ASYMMETRY IN INTEGRATED ACOUSTOOPTIC FILTERS

被引：32

作者：

SMITH, DA ^{[1
]}

DALESSANDRO, A ^{[1
]}

BARAN, JE ^{[1
]}

HERRMANN, H ^{[1
]}

机构：

[1] UNIV GESAMTHSCH PADERBORN,W-4790 PADERBORN,GERMANY

来源：

APPLIED PHYSICS LETTERS | 1993年 / 62卷 / 08期

关键词：

D O I：

10.1063/1.108587

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The often-observed extreme asymmetry in the sidelobe spectra of integrated acousto-optic filters exacerbates cross talk between wavelength-multiplexed optical channels. We explain the source of this asymmetry in terms of a systematic even-order variation of the effective waveguide birefringence as a function of distance from the device center. Calculations show what degree of nonuniformity in Ti-stripe thickness, width, or diffusion temperature are required to account for typical asymmetries. We describe two experiments in which temperature gradients were applied to low-power acousto-optic filters in order to induce sidelobe suppression on either side of the optical transmission function, while greatly enhancing sidelobes on the opposite side.

引用

页码：814 / 816

页数：3

共 17 条

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BARAN JE, 1992, PHOTON TECHNOL LETT, V4, P39

[2]

BOOTH RC, 1984, ELECTRON LETT, V20, P1045, DOI 10.1049/el:19840714

[3]

Choy M. M., 1989, IEEE Photonics Technology Letters, V1, P171, DOI 10.1109/68.36028

[4] INTEGRATED OPTICAL, TE-PASS AND TM-PASS, ACOUSTICALLY TUNABLE, DOUBLE-STAGE WAVELENGTH FILTERS IN LINBO(3) [J].