From Ondax, Inc.
We report on Volume Bragg Grating (VBG) technology for a spectrum of applications in optical components ranging from fixed or tunable filters, ROADM, beam combiners and pump stabilizers. VBGs allow higher integration and added functionality than Fiber Bragg Gratings.
Volume Bragg Grating (VBG) technology is in many ways similar to Fiber Bragg Gratings except that the recording medium for the grating is not a single mode fiber but a bulk medium. The 3-D nature of VBG.s give us new functionalities that are not possible with FBGs or more generally gratings in waveguides. In this presentation we will describe the characteristics of filters we have recently fabricated and present devices that take advantage of the unique properties of VBGs. We will show that in many instances VBGs combine the best attributes of FGBs and thin film filters which leads to devices that are impossible to implement with either of the other two technologies.
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