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High reliability optical splitters composed of silica-based planar lightwave circuits

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5 Author(s)
Hibino, Y. ; NTT Opto-Electron. Labs., Ibaraki, Japan ; Hanawa, Fumiaki ; Nakagome, Hiroshi ; Ishii, M.
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The environmental and mechanical reliability of a planar lightwave circuit (PLC)-type optical splitter modules is investigated with reference to the Bellcore requirements. The module is composed of Y-branching silica-based waveguides on Si connected to optical fiber with UV-curable adhesives and is packaged in a metal case which is filled with humidity-resistant resin. High optical performance such as low loss, low reflection, and thermal stability are obtained through the use of this fiber connection technique. Ten reliability tests including long-term environmental and mechanical tests were carried out for more than ten PLC splitter modules. Under one of the most severe sets of conditions (75°C and 90% RH), all the 19 samples we tested were stable for more than 5000 hours. Other tests confirmed that the PLC splitters offer long-term stability and that their optical characteristics have sufficient mechanical strength. These results indicate that the PLC splitters can be used for practical applications

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Lightwave Technology, Journal of  (Volume:13 ,  Issue: 8 )