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ETRI journal v.27 no.4, 2005년, pp.446 - 448  

Femtosecond Laser Application to PLC Optical Devices and Packaging

Sohn, Ik-Bu   (School of Engineering, ICU  ); Lee, Man-Seop   (School of Engineering, ICU  ); Lee, Sang-Man   (Phoco Co. Ltd.  );
  • 초록

    Using tightly focused femtosecond laser pulses, we produce an optical waveguide and devices in transparent materials. This technique has the potential to generate not only channel waveguides, but also three-dimensional optical devices. In this paper, an optical splitter and U-grooves, which are used for fiber alignment, are simultaneously fabricated in a fused silica glass using near-IR femtosecond laser pulses. The fiber- aligned optical splitter has a low insertion loss, less than 4 dB, including an intrinsic splitting loss of 3 dB and excess loss due to the passive alignment of a single-mode fiber. Finally, we present an output field pattern, demonstrating that the splitting ratio of the optical splitter becomes approximately 1:1.


  • 주제어

    Femtosecond laser processing .   waveguide writing .   PLC optical splitter .   passive alignment.  

  • 참고문헌 (10)

    1. Fabrication and Characterization of Photonic Devices Directly Written in Glass Using Femtosecond Laser Pulses , Florea, C.;Winick, K.A. , J. Lightwave Technol. / v.21,pp.246-253,
    2. Effective Silicon Oxide Formation on Silica-on-Silicon Platforms for Optical Hybrid Integration , Kim, Tae-Hong;Sung, Hee-Kyung;Choi, Ji-Won;Yoon, Ki-Hyun , ETRI J. / v.25,pp.73-80,
    3. Nanostructuring in Submicron-Level Waveguides with Femtosecond Laser Pulses , Li, M.;Ishizuka, M.;Liu, X.;Sugimoto, Y.;Ikeda, N.;Asakawa, K. , Opt. Commun. / v.212,pp.159-163,
    4. Fiber Bragg Gratings with Suppressed Cladding Modes Made in SMF-28 with a Femtosecond IR Laser and a Phase Mask , Grobnic, D.;Smelser, C. W.;Mihilov, S.J.;Walker, R.B.;Lu, P. , IEEE Photon. Technol. Lett. / v.16,pp.1864-1866,
    5. Optical Waveguide Amplifier in Nd-Doped Glass Written with Near-IR Femtosecond Laser Pulses , Sikorski, Y.;Said, A.A.;Bado, P.;Maynard, R.;Florea, C.;Killinger, D.K. , Electron. Lett. / v.36,pp.396-398,
    6. Fabrication and Analysis of a Directional Coupler Written in Glass by Nanojoule Femtosecond Laser Pulses , Streltsov, A.M.;Borrelli, N.F. , Opt. Lett. / v.26,pp.42-43,
    7. Microstructure in Lithium Niobate by Use of Focused Femtosecond Laser Pulses , Gui, L.;Xu, B.;Chong, T.C. , IEEE Photon. Technol. Lett. / v.16,pp.1337-1339,
    8. Photowritten Optical Waveguides in Glasses with Ultrashort Pulse Laser , Qiu, Miura, J.;Inouye, H.;Mitsuyu, T.;Hirao, K. , Appl. Phys. Lett. / v.71,pp.3329-3331,
    9. Holographic Encoding of Fine-Pitched Micrograting Structures in Amorphous SiO2 Thin Films on Silicon by a Single Femtosecond Laser Pulses , Kawamura, K.;Sarukura, N.;Hirao, K. , Appl. Phys. Lett. / v.78,pp.1038-1040,
    10. Writing Waveguides and Gratings in Silica and Related Materials by a Femtosecond Laser , Hirao, K.;Miura, K. , J. Non-Cryst. Solids. / v.239,pp.91-95,

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