• Title, Summary, Keyword: Planar lightwave circuit

Search Result 35, Processing Time 0.045 seconds

A study on micro grooving characteristics of planar lightwave circuit and glass using ultrasonic vibration cutting (초음파 진동절삭을 이용한 평면 광도파로와 유리의 미세 홈 가공특성에 관한 연구)

  • 이준석;김병국;정융호;이득우
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
    • /
    • /
    • pp.167-172
    • /
    • 2002
  • Recent years, optical components'are widely used in optical communication industry for high speed and mass storage data processing. Micro grooving of planar lightwave circuit and glass, those are widely used in optical component, are realized by polycrystalline diamond tool with ultrasonic vibration. To know the characteristics of brittle materials cutting, ultrasonic vibration cutting tool and machining system are built for the experiment. Grooving on planar lightwave circuit and glass experiments are performed and their shape are measured by photograph with microscope. It reveals that better groove shape with low chipping of planar lightwave circuit and glass are obtained by micro grooving machining with ultrasonic vibration. These experiments are considered as a possibility to the micro grooving of optical communication components.

  • PDF

Polymer Planar-Lightwave-Circuit-Type Variable Optical Attenuator Fabricated by Hot Embossing Process

  • Kim, Jin-Tae;Choi, Choon-Gi;Sung, Hee-Kyung
    • ETRI Journal
    • /
    • v.27 no.1
    • /
    • pp.122-125
    • /
    • 2005
  • A polymer-based planar-lightwave-circuit-type variable optical attenuator (VOA) was fabricated using a hot embossing process. With an optimized one-step embossing process, forty micro-channels for the guidance of light were defined on a polymer thin film with an accuracy of ${\pm}0.5{\mu}m$. The fabricated polymeric thermo-optic VOA shows 30 dB attenuation with 110 mW electrical input power at $1.55{\mu}m$. The rise and fall times are less than 5 ms.

  • PDF

Design of PLC Triplexer Using Three Waveguide Interferometer

  • Choi, Jun-Seok;Oh, Jin-Kyong;Lee, Dong-Hwan;Lee, Hyung-Jong;Kim, Sang-Duk
    • Journal of the Optical Society of Korea
    • /
    • v.12 no.3
    • /
    • pp.162-165
    • /
    • 2008
  • A novel planar lightwave circuit(PLC) triplexer using a three-waveguide interferometer(TWI) is proposed and examined using the transfer matrix and the beam propagation methods. The proposed triplexer consists of two three-waveguide couplers and three waveguides connecting the couplers. Simulation for the TWI triplexer shows the excess losses of 0.03 dB and 0.94 dB with the crosstalks of -22.3 dB and -14.5 dB in reception, respectively, for the wavelength of 1490- and 1550-nm, while showing the excess loss of 1.75 dB in transmission for the wavelength of 1310 nm. The proposed design shows compact feature as short as 11.5 mm for the refractive-index contrast of 0.45%.

External Cavity Lasers Composed of Higher Order Gratings and SLDs Integrated on PLC Platform

  • Shin, Jang-Uk;Oh, Su-Hwan;Park, Yoon-Jung;Park, Sang-Ho;Han, Young-Tak;Sung, Hee-Kyung;Oh, Kwang-Ryong
    • ETRI Journal
    • /
    • v.29 no.4
    • /
    • pp.452-456
    • /
    • 2007
  • Very compact 4-channel 200-GHz-spacing external cavity lasers (ECLs) were fabricated by hybrid integration of reflection gratings and superluminescent laser diodes on a planar lightwave circuit chip. The fifth-order gratings as reflection gratings were formed using a conventional contact-mask photo-lithography process to achieve low-cost fabrication. The lasing wavelength of the fabricated ECLs matched the ITU grid with an accuracy of ${\pm}0.1$ nm, and optical powers were more than 0.4 mW at the injection current of 80 mA for all channels. The ECLs showed single mode operations with more than 30 dB side lobe suppression.

  • PDF

Optimization of a Birefringence-Enhanced-Waveguide-Based Polarization Beam Splitter

  • Kim, Jong-Hoi;Choe, Joong-Seon;Youn, Chun-Ju;Kim, Duk-Jun;Kwon, Yong-Hwan;Nam, Eun-Soo
    • ETRI Journal
    • /
    • v.34 no.6
    • /
    • pp.946-949
    • /
    • 2012
  • We present the optimization of a birefringence-enhanced-waveguide (BWG)-based polarization beam splitter (PBS) in a Mach-Zehnder interferometer (MZI) configuration and analyze the structure-dependent or polarization-dependent phase difference, using a delay-line MZI (DL-MZI). We fabricate the DL-MZI using silica-based planar lightwave circuit technology and, using the DL-MZI, demonstrate the ability to optimize a PBS by measuring the birefringence of the BWG and structure-dependent phase offset.

40channel Arrayed Waveguide Grating with O.75delta% Refractive Index (0.75Δ% 굴절율차를 가진 40채널 광파장 다중화 및 역다중화 소자 제작 및 특성)

  • Moon, H.M.;Choi, G.S.;Lee, K.H.;Kim, D.H.;Lee, J.H.;Lee, D.H.;Oh, J.K;Kwak, S.C.;Kwon, O.K.;Kang, D.S.;Choi, J.S.;Jong, G;Lee, H.Y.
    • Korean Journal of Optics and Photonics
    • /
    • v.16 no.3
    • /
    • pp.196-200
    • /
    • 2005
  • A 40 channel arrayed-waveguide grating (AWG) filter operating in C-band and L-band wavelength regions has been fabricated using PLC (Planar Lightwave Circuit) processes with 0.75 refractive index difference. Its design was optimized for matching the center wavelength with the ITU-recommended wavelength. The characteristics of the fabricated C-band AWG are as follows; average insertion loss < 2.5 dB, polarization-dependent loss < 0.3 dB, non-adjacent crosstalk >35dB, and the loss uniformity of 0.8 dB. In the L-band AWG, wavelength accuracy is below 0.02nm.

PLC Devices Fabricated on Flexible Plastic Substrate by Roll-to-Roll Imprint Lithography (유연 기판을 이용한 PLC소자 제작을 위한 롤투롤 공정 연구)

  • Kang, Ho Ju;Kim, Taehoon;Jeong, Myung Yung
    • Journal of the Microelectronics and Packaging Society
    • /
    • v.22 no.4
    • /
    • pp.25-29
    • /
    • 2015
  • Demand for a low-cost, high-throughput, and high-resolution patterning method for fabricating devices continues to increase. The roll-to-roll (R2R) imprint lithography technique has received a great deal of attention as a means of fabricating next-generation devices. In this paper, we propose a fabrication method for polymeric planar lightwave circuit (PLC) devices that uses R2R imprint lithography. The proposed technique uses an elastomeric polydimethylsiloxane (PDMS) mold. A Si wafer with micro patterns is used as the Si master. The PDMS mold is then replicated from the Si master. By applying a precise web tension and at a given web speed, we fabricated a micro-patterned PLC device. The insertion losses were 4.0 dB for a $1{\times}2$ optical splitter. As such, the proposed method of fabricating a PLC device by the R2R process was shown to be an effective solution.

Humidity Sensor using Polyvinylpyrrolidone-Coated Mach-Zehnder Interferometer in Planar Lightwave Circuit (폴리비닐피롤리돈이 코팅된 마하젠더 간섭계 기반의 평판형 광도파로 습도센서)

  • Kim, Ju Ha;Kim, Myoung Jin;Jung, Eun Joo;Hwang, Sung Hwan;Lee, Woo Jin;Choi, Eun Seo;Rho, Byung Sup
    • Korean Journal of Optics and Photonics
    • /
    • v.24 no.5
    • /
    • pp.251-255
    • /
    • 2013
  • In this paper, the characteristics of a humidity sensor implemented by Mach Zehnder Interferometer (MZI) in a Planar Lightwave Circuit (PLC) have been designed and demonstrated. The humidity outside is detected with polyvinylpyrrolidone (PVP) coated on the etched arm of the MZI. The length of the etched arm is 10 mm and the PVP was coated by dip-coating into the etched region. As the refractive index of the PVP changes with the surrounding humidity, the PVP-coated humidity sensor presented changes in the interferogram depending on RH (Relative Humidity) around the PLC. The measured results show that the proposed humidity sensor works successfully in the range of 30% to 80% of RH.