A optical fiber device is described which can be used for wavelength division multiplexing, switching of optical signals and for optical fiber sensors. The device is formed by taking the central output port of 3 by 3 fused taper Bow- Tie optical fiber coupler back to the central input port to form optical fiber ring resonator with two inputs and two outputs.
As we know, 2 X 2 fused taper Hi-Bi optical fiber couplers are used in many interferometric optical fiber sensor such as FOG, Michelson optical fiber interferometer and Mach-Zehnder optical fiber interferometer. In this paper, the fabrication of 3 X 3 fused taper Hi-Bi optical fiber couplers and their properties and application are discussed. The method for identifying and aligning the birefringent axes of the fibers forming coupler are described. The insertion los of couplers we fabricated is about 1.0-1.5dB. The splitting is about 1:0:1-1:1:1. The extinction ratio is about 15-20dB. We have tested some interferometer system and give some results. The wavelength of light is 1.3micrometers .
As well known, polarization-maintaining optical fiber and its components can be used in many areas related to fiber optics, such as coherent optical communication and optical fiber sensors based on interferometric techniques. In this paper, we proposed a Mach-Zehnder interferometer with two 2 by 2 fused taper polarization-maintaining optical fiber couples, in which a 1.3 micrometers LD is used as light source and the polarization-maintaining optical fiber is Bow-Tie fiber. Using this fiber interferometer, the measurement of displacement and vibration can be realized.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.