Acta Optica Sinica, Volume. 19, Issue 7, 909(1999)
Study of Photorefractive Functional Waveguide-Grating
With the development of optical fiber communication, the photorefractive functional waveguie gratings are being widely utilized in a great variety of devices and systems. A novel two-beam holographic approach, including a space beam and a guided-wave beam, for fabricating a photorefractive grating on Ti:LiNbO3 channel waveguides is proposed. The theoretical analysis of the experiemntal results show that the approach is practical and effective. This approach can be also used for fabricating the surface-relief waveguide gratings. It is a flexible means to fabricate various functional gratings with a grating-period shorter than the half-wavelength of the exposure light and the chirped-grating.
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[in Chinese], [in Chinese]. Study of Photorefractive Functional Waveguide-Grating[J]. Acta Optica Sinica, 1999, 19(7): 909