• Journal of the Institute of Electronics Engineers of Korea SD
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• v.38 no.6
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• pp.412-419
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• 2001

In accordance with the PON(passive optical network) could be setup, effective connections with light sources, optical detectors, and optical fibers are the best sensitive points to represent the efficiency of network. Therefore, in this paper we designed and fabricated optical transceiver connection chip that was consisted of channel waveguide, Y-branch, and CWDM on the 2" BK7 glass substrate. This chip can be used for 1.31/1.55${\mu}{\textrm}{m}$ CWDM network and 1.55${\mu}{\textrm}{m}$ region dense WDM network.work.

• Proceedings of the Optical Society of Korea Conference
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• 2002.07a
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• pp.188-189
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• 2002

기간망의 속도 증가와 더불어 가입자망치 고속화는 필수 불가결한 것으로 이를 위해 메트로 네트웍의 고속화에 대한 노력이 진행되고 있다. 메트로 네트웍 및 가입자망의 고속화를 위해서는 시스템의 저가화가 필요하다. CWDM(Coarse WDM)은 채널 간격이 10 - 25nm로 채널 간격이 넓기 때문에 복잡한 온도제어 없이 저가의 Uncooled DFB-LD 및 WDM 소자를 사용할 수 있어서, 메트로 네트웍의 대용량화를 보다 경제적으로 실현가능하기 때문에 CWDM 시스템이 유망한 것으로 받아들여지고 있다. (중략)

• Korean Journal of Optics and Photonics
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• v.18 no.3
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• pp.185-189
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• 2007

A novel technology for CWDM (Coarse Wavelength Division Multiplexer) utilizing a PLC (Planar Lightwave Circuit)-AWG (Arrayed Waveguide Grating) fabrication process is proposed. BPM (Beam Propagation Method) Simulation results on the employed parabolic-horn-type input slab waveguide of AWG and the performance of the 20 nm-channel spacing CWDM with flattened passband are presented. Waveguides of $0.75{\triangle}%$ have been used in this experiment and the insertion loss at the peak wavelength is 3.5 dB for a Gaussian spectrum and is 4.8 dB for a flat-top spectrum. The bandwidth at 3 dB is better than 10 nm and 13 nm for Gaussian and flat-top spectra, respectively.