title: Packaged, high-Q, microsphere-resonator-based add-drop filter.
abstract: In this Letter a packaged add-drop filter composed of a silica microsphere resonator and two fiber tapers is demonstrated theoretically and experimentally. A two-step fabrication process using an UV curable polymer is shown to stabilize the microsphere resonator with a diameter of 153 μm coupled to two tapered microfibers with diameters of 1.5 μm which are used as add and drop ports. A high loaded quality factor (Q-factor) of 0.9×10(5) and a free spectral range (FSR) of about 104 pm are obtained at around 1550 nm from the microsphere for the parallel coupling tapered fibers in the add-drop configuration. This device has a range of advantages, such as ease of fabrication, low-cost, and compatibility with traditional and commercial fiber systems.
authors.forename: Pengfei
authors.initials: P
authors.lastname: Wang
authors.forename: Ming
authors.initials: M
authors.lastname: Ding
authors.forename: Ganapathy Senthil
authors.initials: GS
authors.lastname: Murugan
authors.forename: Lin
authors.initials: L
authors.lastname: Bo
authors.forename: Chunying
authors.initials: C
authors.lastname: Guan
authors.forename: Yuliya
authors.initials: Y
authors.lastname: Semenova
authors.forename: Qiang
authors.initials: Q
authors.lastname: Wu
authors.forename: Gerald
authors.initials: G
authors.lastname: Farrell
authors.forename: Gilberto
authors.initials: G
authors.lastname: Brambilla