[Measurement of waveguide depth in proton-exchanged LiNbO3 by infrared absorption spectroscopy].
A novel method for determining proton-exchanged LiNbO3 waveguide depth by infrared absorption spectroscopy was proposed. The method overcomes the shortcoming that the conventional prism-coupling + IWKB technique is only applicable to the multimode waveguides. For the commonly used single-mode waveguides, however, it is helpless. The experimental results indicated that this method has good accuracy.
Zhang
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D
College of Precision Instrument and Lab. of Opto-electronic Information Science and Technology, Ministry of Education of China, 300072 Tianjin.
Chen
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C
Ding
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Chen
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X
D015502:Absorptiometry, Photon; D008094:Lithium / Q000737:chemistry*; D009556:Niobium / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry; D010087:Oxides / Q000737:chemistry*; D012680:Sensitivity and Specificity; D013055:Spectrophotometry, Infrared / Q000379:methods*
D009942:Organometallic Compounds; D010087:Oxides; D009556:Niobium; C091692:lithium niobate; D008094:Lithium