Packaged, high-Q, microsphere-resonatorbased add-drop filter

Pengfei Wang, Ming Ding, Ganapathy Senthil Murugan, Lin Bo, Chunying Guan, Yuliya Semenova, Qiang Wu, Gerald Farrell, Gilberto Brambilla

Research output: Contribution to journalArticlepeer-review

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 × 105 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.

Original languageEnglish
Pages (from-to)5208-5211
Number of pages4
JournalOptics Letters
Volume39
Issue number17
DOIs
Publication statusPublished - 2014

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