Two-Dimensional Tapered Optical Fiber Core for Whispering Gallery Mode Excitation
A two-dimensional tapered fiber core mimicking a commonly used tapered fiber coupler is proposed and experimentally demonstrated in a piece of single-mode fiber (SMF) for whispering gallery mode (WGM) excitation. Tapering the fiber core with femtosecond laser ablation can simultaneously enhance the...
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| Veröffentlicht in: | IEEE photonics technology letters 2022-02, Vol.34 (4), p.1-1 |
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| container_title | IEEE photonics technology letters |
| container_volume | 34 |
| creator | Shi, Leilei Gao, Qirui Wang, Qianqian Jiang, Lidan Luo, Jing Zhu, Tao |
| description | A two-dimensional tapered fiber core mimicking a commonly used tapered fiber coupler is proposed and experimentally demonstrated in a piece of single-mode fiber (SMF) for whispering gallery mode (WGM) excitation. Tapering the fiber core with femtosecond laser ablation can simultaneously enhance the evanescent field and decrease the effective refractive index of the core mode, which lowers the phase mismatch between the core mode and the WGM in a spherical cavity with a diameter less than the fiber cladding radius. Experimental results show that symmetric Lorentzian dip with a quality factor (Q-factor) of 3.6×103 and asymmetric Fano-like lineshape can be achieved. Such a tapered fiber core provides an effective coupling method for a single WGM based photonic device or WGM array-based lab in-fiber due to its inherent compatibility with fiber optic hardware, high integration, and robustness. |
| doi_str_mv | 10.1109/LPT.2022.3149546 |
| format | Article |
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Tapering the fiber core with femtosecond laser ablation can simultaneously enhance the evanescent field and decrease the effective refractive index of the core mode, which lowers the phase mismatch between the core mode and the WGM in a spherical cavity with a diameter less than the fiber cladding radius. Experimental results show that symmetric Lorentzian dip with a quality factor (Q-factor) of 3.6×103 and asymmetric Fano-like lineshape can be achieved. Such a tapered fiber core provides an effective coupling method for a single WGM based photonic device or WGM array-based lab in-fiber due to its inherent compatibility with fiber optic hardware, high integration, and robustness.</description><identifier>ISSN: 1041-1135</identifier><identifier>EISSN: 1941-0174</identifier><identifier>DOI: 10.1109/LPT.2022.3149546</identifier><identifier>CODEN: IPTLEL</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Couplings ; Diameters ; Dip cladding ; Excitation ; Fiber optics ; Laser ablation ; Optical fiber couplers ; Optical fiber devices ; Optical fibers ; Optical resonators ; Polymers ; Q factors ; Refractive index ; Refractivity ; Tapering ; Ultrafast optics ; Whispering gallery modes</subject><ispartof>IEEE photonics technology letters, 2022-02, Vol.34 (4), p.1-1</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2022</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c291t-48f94e41babb0de08fdfc683246cb5cb6587326b2bcd8b3e4e4e6ac2195099a53</citedby><cites>FETCH-LOGICAL-c291t-48f94e41babb0de08fdfc683246cb5cb6587326b2bcd8b3e4e4e6ac2195099a53</cites><orcidid>0000-0003-1953-6932 ; 0000-0001-6211-4570</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/9706182$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,796,27924,27925,54758</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/9706182$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Shi, Leilei</creatorcontrib><creatorcontrib>Gao, Qirui</creatorcontrib><creatorcontrib>Wang, Qianqian</creatorcontrib><creatorcontrib>Jiang, Lidan</creatorcontrib><creatorcontrib>Luo, Jing</creatorcontrib><creatorcontrib>Zhu, Tao</creatorcontrib><title>Two-Dimensional Tapered Optical Fiber Core for Whispering Gallery Mode Excitation</title><title>IEEE photonics technology letters</title><addtitle>LPT</addtitle><description>A two-dimensional tapered fiber core mimicking a commonly used tapered fiber coupler is proposed and experimentally demonstrated in a piece of single-mode fiber (SMF) for whispering gallery mode (WGM) excitation. Tapering the fiber core with femtosecond laser ablation can simultaneously enhance the evanescent field and decrease the effective refractive index of the core mode, which lowers the phase mismatch between the core mode and the WGM in a spherical cavity with a diameter less than the fiber cladding radius. Experimental results show that symmetric Lorentzian dip with a quality factor (Q-factor) of 3.6×103 and asymmetric Fano-like lineshape can be achieved. Such a tapered fiber core provides an effective coupling method for a single WGM based photonic device or WGM array-based lab in-fiber due to its inherent compatibility with fiber optic hardware, high integration, and robustness.</description><subject>Couplings</subject><subject>Diameters</subject><subject>Dip cladding</subject><subject>Excitation</subject><subject>Fiber optics</subject><subject>Laser ablation</subject><subject>Optical fiber couplers</subject><subject>Optical fiber devices</subject><subject>Optical fibers</subject><subject>Optical resonators</subject><subject>Polymers</subject><subject>Q factors</subject><subject>Refractive index</subject><subject>Refractivity</subject><subject>Tapering</subject><subject>Ultrafast optics</subject><subject>Whispering gallery modes</subject><issn>1041-1135</issn><issn>1941-0174</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kE1LAzEQhoMoWKt3wcuC56352mxylGqrUKnCisclyc5qyrZZky3af29Ki6d5B553YB6ErgmeEILV3eK1mlBM6YQRrgouTtCIKE5yTEp-mjJOmRBWnKOLGFcYE14wPkJv1Y_PH9waNtH5je6ySvcQoMmW_eBs2mfOQMimPkDW-pB9fLmYALf5zOa66yDsshffQPb4a92gh3TjEp21uotwdZxj9D57rKZP-WI5f57eL3JLFRlyLlvFgROjjcENYNk2rRWSUS6sKawRhSwZFYYa20jDILEgtKVEFVgpXbAxuj3c7YP_3kIc6pXfhvRCrKmgpeS4kDhR-EDZ4GMM0NZ9cGsddjXB9V5cncTVe3H1UVyq3BwqDgD-cVViQSRlf6uLaVo</recordid><startdate>20220215</startdate><enddate>20220215</enddate><creator>Shi, Leilei</creator><creator>Gao, Qirui</creator><creator>Wang, Qianqian</creator><creator>Jiang, Lidan</creator><creator>Luo, Jing</creator><creator>Zhu, Tao</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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Tapering the fiber core with femtosecond laser ablation can simultaneously enhance the evanescent field and decrease the effective refractive index of the core mode, which lowers the phase mismatch between the core mode and the WGM in a spherical cavity with a diameter less than the fiber cladding radius. Experimental results show that symmetric Lorentzian dip with a quality factor (Q-factor) of 3.6×103 and asymmetric Fano-like lineshape can be achieved. Such a tapered fiber core provides an effective coupling method for a single WGM based photonic device or WGM array-based lab in-fiber due to its inherent compatibility with fiber optic hardware, high integration, and robustness.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/LPT.2022.3149546</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0003-1953-6932</orcidid><orcidid>https://orcid.org/0000-0001-6211-4570</orcidid></addata></record> |
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| ispartof | IEEE photonics technology letters, 2022-02, Vol.34 (4), p.1-1 |
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| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Couplings Diameters Dip cladding Excitation Fiber optics Laser ablation Optical fiber couplers Optical fiber devices Optical fibers Optical resonators Polymers Q factors Refractive index Refractivity Tapering Ultrafast optics Whispering gallery modes |
| title | Two-Dimensional Tapered Optical Fiber Core for Whispering Gallery Mode Excitation |
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