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Four-channel signal-receiver optical subassembly module using a thin-film filter-based coarse-wavelength-division-multiplexing demultiplexer for monitoring 22.9-kV XLPE cable joints
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- Authors
- Youngbeom Jung, In-Jin Seo, Gilsoo Jang, Hyun Jin Kim, Ji Hyoung Ryu, Sung Chang Kim, Hyoung-Jun Park
- Issue Date
- 2018-10
- Citation
- Optical Engineering, v.57, no.10, pp.1-4
- ISSN
- 0091-3286
- Publisher
- SPIE
- Language
- English
- Type
- Journal Article
- Abstract
- We propose a four-channel signal-receiver optical subassembly (ROSA) for partial-discharge signal transmission using a coarse-wavelength-division multiplexing (CWDM) thin-film filter (TFF). The proposed fourchannel ROSA consists of an ultrasmall-factor-based demultiplexer module, which is fabricated with a parallel optical block, four CWDM TFFs, and four 28-Gbps integrated positive-intrinsic-negative photodiode blocks. The partial discharge on a 22.9-kV XLPE cable joint was successfully measured using the proposed module with phase-resolved partial-discharge analysis and a pulsediagnosis system. The experimental results demonstrated the feasibility and effectiveness of the proposed ROSA module for the diagnosis of partial discharge, which is important for monitoring electric power facilities.