A tunable all-fiber filter based on microfiber loop resonator

In this paper, a tunable high finesse microfilter is described, which is based on microfiber loop resonator (MLR). The length of microfiber loop could be controlled by a small cylindrical piezoelectric ceramic. As we calculated, this resonator has the maximum Q factor of 2400 and the finesse of 4.3. MLR filter was demonstrated that the maximum extinction ratio is about 10dB, and the free spectral range variation range could be more than 100GHz. This device could also be integrated into a smaller size due to the bigger radius of curvature of the microfiber.

[1]  Ali Rostami,et al.  Full-optical realization of tunable low pass, high pass and band pass optical filters using ring resonators , 2004 .

[2]  D.J. DiGiovanni,et al.  The microfiber loop resonator: theory, experiment, and application , 2006, Journal of Lightwave Technology.

[3]  Xinwan Li,et al.  Group delay and dispersion analysis of compound high order microring resonator all-pass filter , 2006 .

[4]  Limin Tong,et al.  Single-mode guiding properties of subwavelength-diameter silica and silicon wire waveguides. , 2004, Optics express.

[5]  A. Hale,et al.  Fabrication and study of bent and coiled free silica nanowires: Self-coupling microloop optical interferometer. , 2004, Optics express.

[6]  M. Sumetsky,et al.  Optical microfiber loop resonator , 2005, (CLEO). Conference on Lasers and Electro-Optics, 2005..

[7]  Limin Tong,et al.  Modeling of silica nanowires for optical sensing. , 2005, Optics express.

[8]  Qing Yang,et al.  Photonic nanowires directly drawn from bulk glasses. , 2006, Optics express.

[9]  Limin Tong,et al.  Supercontinuum generation in submicrometer diameter silica fibers. , 2006, Optics express.

[10]  Seung Gol Lee,et al.  Resonance characteristics of waveguide-coupled polyimide microring resonator , 2003 .

[11]  Limin Tong,et al.  All-fiber add-drop filters based on microfiber knot resonators. , 2007, Optics letters.

[12]  Gilberto Brambilla,et al.  Fabrication of optical fibre nanowires and their optical and mechanical characterisation , 2006 .

[13]  Peter Horak,et al.  Optical microfiber coil resonator refractometric sensor. , 2007, Optics express.

[14]  Fei Xu,et al.  Manufacture of 3-D Microfiber Coil Resonators , 2007, IEEE Photonics Technology Letters.

[15]  Chunfei Li,et al.  Characteristics of complementary ring-resonator add/drop filters modeling by using graphical approach , 2007 .

[16]  L. Tong,et al.  Roughness-induced radiation losses in optical micro or nanofibers. , 2007, Optics express.

[17]  M Sumetsky.  Uniform coil optical resonator and waveguide: transmission spectrum, eigenmodes, and dispersion relation. , 2005, Optics express.

[18]  Sanjoy Mandal,et al.  A generalized approach for modeling and analysis of ring-resonator performance as optical filter , 2006 .