NONDESTRUCTIVE WAVE-GUIDE LOSS-MEASUREMENT METHOD USING SELF-PUMPED PHASE-CONJUGATION FOR OPTIMUM END-FIRE COUPLING

被引：20

作者：

BRULISAUER, S ^{[1
]}

FLUCK, D ^{[1
]}

SOLCIA, C ^{[1
]}

PLISKA, T ^{[1
]}

GUNTER, P ^{[1
]}

机构：

[1] UNIV PAVIA,DEPT ELECTR,I-27100 PAVIA,ITALY

来源：

OPTICS LETTERS | 1995年 / 20卷 / 17期

关键词：

D O I：

10.1364/OL.20.001773

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a new nondestructive method for measuring the propagation loss coefficient in waveguides based on optimum end-fire coupling by self-pumped phase conjugation in a photorefractive BaTiO3 crystal. In a first pass through the waveguide, the laser beam is adapted to the waveguide mode profile, and hence the phase-conjugated beam is automatically coupled back into the guide with the optimum coupling efficiency. The propagation loss coefficient is determined by measurement of the transmittance of the phase-conjugated beam in the second pass through the waveguide. We apply this method to measure the propagation loss coefficient of ion-implanted KNBO3 channel waveguides with an accuracy of better than 5%. (C) 1995 Optical Society of America

引用

页码：1773 / 1775

页数：3

共 10 条

[1] CALORIMETRIC MEASUREMENT OF LINBO3 WAVEGUIDE ABSORPTION LOSSES [J].