• Title/Summary/Keyword: optical planar waveguide

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Wavelength and polarization selectivity of a side-polished fiber contacted with a metal-clad planar waveguide (금속 클래드 평면 도파로와 결합된 측면 연마 광섬유의 파장 및 편광 선택성)

  • 김광택;황중호;이준옥;김철호;황보승
    • Korean Journal of Optics and Photonics
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    • v.13 no.2
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    • pp.134-139
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    • 2002
  • We report an experimental investigation of the wavelength and polarization selectivity of a side-polished fiber in contact with a metal-clad planar waveguide. The influences of the structural parameters of the planar waveguide, including refractive index of the superstrate and metal thickness, on the optical transmission characteristics of the device were measured and explained. The conditions for high wavelength and polarization selectivity wore predicted and demonstrated experimentally.

Fabrication of an Optical Polarizer Using Optical Coupling Between Single Mode Fiber and Metal-Clad Planar Waveguide (단일모드 광섬유와 금속클래드 평면도파로 사이의 광 결합을 이용한 편광기 제작)

  • Kim, Gwang-Taek;Song, Jae-Won;Jeong, Ung-Gyu;Gang, Sin-Won
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.37 no.4
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    • pp.53-59
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    • 2000
  • Based on the polarization selectivity of fiber-to-planar waveguide coupler, a novel fiber optic polarizer has been designed and fabricated. The large structural birefringence of a metal-clad planar waveguide enables the polarizer to have wide operating wavelength range. The polymer and gold were used for the guiding layer and cladding layer of the planar waveguide, respectively. The experimental results showed that either TE or TM polarized lightwave could be created by adjusting the thickness of planar waveguide. Operating wavelegth range satisfying more than 16㏈ polarization extinction ratio was 130nm. The average insertion loss of fabricated devices was order of 0.5㏈.

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Beam Splitting by the Use of Waveguide Airy Beams

  • Kim, Kyoung-Youm;Kim, Sae-Hwa
    • Journal of the Optical Society of Korea
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    • v.15 no.4
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    • pp.403-406
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    • 2011
  • Here we report Airy beams coupled with waveguide modes. These waveguide Airy (WAiry) beams propagate through layered planar structures inheriting the characteristics of waveguide modes as well as those of Airy beams, such as diffraction-free and accelerating features. In particular, we focus on the WAiry beams associated with backward waveguide modes, showing that the backward feature can alter the trajectories of the WAiry beams significantly. Based on this, we propose a new scheme of waveguide-type polarization/power beam splitters.

Laser microstructuring of trench and its application to optical waveguide (레이저를 이용한 트렌치 제작 및 응용 연구)

  • Choi, Hun-Kook;Yoo, Dongyoon;Sohn, Ik-Bu;Noh, Young-Chul;Kim, Young-Sic;Kim, Su-yong;Kim, Wan-Chun;Kim, Jin-Bong
    • Laser Solutions
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    • v.18 no.1
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    • pp.7-11
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    • 2015
  • In this paper, micro trench structure is fabricated by femtosecond laser for inserting optical reflecting wavelength filter in planar waveguide. The width and depth of the trench is controlled by femtosecond laser machining condition. Also, large scale of single channel with 500um and 1000um on silica plate is fabricated by femtosecond laser, and roughness of the channel surface is polished by $CO_2$ laser for the insertion of the filter. Then, the characteristic of the planar waveguide inserted the filter is verified.

Optical implementation of optical switching by use of a multimode planar waveguide and hologram filters (다중모드 평면 도파로와 홀로그램 필터를 이용한 광신호 교환의 광학적 구현)

  • Shin, Dong-Hak
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.12 no.3
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    • pp.563-568
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    • 2008
  • We present a method to implement an $M{\times}N$ switching system by use of an $M{\times}1$ multimode planar waveguide and N hologram filters. The $M{\times}1$ multimode planar waveguide provides the pass of optical signals and changes the output speckle patterns by applying an electrical signal. The complex speckle patterns generated from the multimode planar waveguide are recorded into the N hologram filters and used as the code for destination. The feasibility of our method is experimentally demonstrated.

Optical coupling between a side polished fiber and planar waveguide including a thin metal film (측면 연마 광섬유가 금속 박막이 포함된 평면 도파로 사이의 광 결합)

  • 김광택;황중호;이준옥;김상우;강신원;서동일;손재원
    • Korean Journal of Optics and Photonics
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    • v.12 no.5
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    • pp.406-413
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    • 2001
  • We report theoretical and experimental results for the wavelength and polarization selectivity of a fiber-to-planar waveguide coupler made of a side polished single mode fiber covered with a planer waveguide incorporating a thin metal film. A simple but exact approach to obtain the modal properties of multilayer planar waveguide with a thin metal film is described. The device was modeled into equivalent 1 dimensional structure and its behaviour was analyzed based on coupled mode theory. The effects of metal film thickness and refractive index of superstrate on the device properties were measured and explained.

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3-Dimensionally Integrated Planar Optics for 100 Gb/s Optical Packet Address Detection

  • Song, Seok-Ho;Lee, El-Hang
    • ETRI Journal
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    • v.17 no.2
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    • pp.1-10
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    • 1995
  • We propose a novel planar optical interconnection scheme for 100 Gb/s optical packet address detection, which consists of waveguide grating couplers and a diffractive microlens integrated on a glass substrate 3-dimensionally. Length and duty cycle of the grating couplers have been determined on the bases of the ray-optic propagation-mode analysis in a slab waveguide and of the rigorous coupled-wave diffraction analysis for out-coupled radiation-modes. The 3-dimensionally integrated planar optics makes it possible to connect each address bit-signals of $TE_ 0-waveguide$ mode to the detector with a power uniformity of 6.4 % and a total coupling efficiency of 72.3 %.

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A Study on the Normalized Analysis of Sensitivity Optimization of Evanescent-Field, Integrated-Optic Biosensor based on Planar Optical Waveguide (평면 광도파로 기반의 소산파 집적광학 바이오센서의 감지도 최적화에 관한 정규화 해석에 관한 연구)

  • Jung, Hongsik
    • Journal of Sensor Science and Technology
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    • v.27 no.1
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    • pp.25-30
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    • 2018
  • Closed-form analytical expressions and 3-dimensional normalized charts for the homogeneous sensing and surface sensing structures are derived to provide the conditions for the maximum sensitivity of integrated-optic biosensors based on evanescent-wave and stepindex planar optical waveguides. The analysis is made for transverse electric (TE) polarization mode, in both cases where the measurand is homogeneously distributed in the cover (namely, homogeneous sensing), and where it is an ultrathin film on the waveguide-cover interface (namely, surface sensing).

Fabrication of Monolithic Spectrometer Module Based on Planar Optical Waveguide Platform using UV Imprint Lithography (UV 임프린트 공정을 이용한 평판형 광도파로 기반의 집적형 분광 모듈 제작)

  • Oh, Seung hun;Jeong, Myung yung;Kim, Hwan gi;Choi, Hyun young
    • Journal of the Microelectronics and Packaging Society
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    • v.22 no.3
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    • pp.73-77
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    • 2015
  • This paper presents integrated polymeric spectrometer module which offers compact size, easily-fabricated structure and low cost. The proposed spectrometer module includes the nano diffraction grating with non-uniform pitch and planar optical waveguide with concave mirror to be fabricated by UV imprint lithography. To increase the reflection efficiency, we designed the nano diffraction grating with triangular profiles. The polymeric planar spectrometer includes a spectral bandwidth of 700 nm, resolution of 10 nm and precision below 5 nm. This polymeric planar spectrometer is well-suited for sensor system.

Fabrication of Ni master for the replication of planar optical devices by LIGA process (LIGA 공정을 이용한 평면형 광소자용 Ni 마스터 제작)

  • Kim, Jin-Tae;Jeong, Myung-Yung
    • Proceedings of the KSME Conference
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    • 2003.04a
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    • pp.945-949
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    • 2003
  • LIGA(Lithographie Galvanoformung Abformung), a fabrication method for the production of microstructrues with a high aspect ratio, is now playing an important role in a fabrication of polymeric optical waveguide device as the replication processes have been developed such as hot embossing and injection molding. The present report deals with the fabrication of Ni master used for the replication of multi-mode polymeric optical waveguide. With the basic technological features in the sequence of the LIGA technique, we fabricated Ni master with 12 channel microstructures of $100\;{\times}\;100{\mu}m\;^2{\times}\;60mm$, and achieved an accuracy of ${\pm}1\;{\mu}m$. Manufactured polymeric optical wavegude with the same using hot embossing process has also the same accuracy and approved its mass production capability.

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