Monolithic fused 1 × 4 couplers with high uniformity |
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Authors: | Samuel Varghese Suresh Nair CP Girijavallabhan |
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Institution: | a NeST Research and Development Centre, Cochin 37, India b International School of Photonics, CUSAT, Cochin-22, India c Centre of Excellence in Lasers and Optoelectronic Sciences, CUSAT, Cochin 22, India |
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Abstract: | A new method for the fabrication of high uniformity monolithic 1 × 4 singlemode fused coupler is described together with details of its performance in terms of coupling ratio, spectral response and uniformity. The fabricated device exhibits ultra-broadband performance with a port-to-port uniformity of 0.4 dB. The reliability of such couplers is also evaluated and found to have good stability. Moreover, by controlling the process parameters it is possible to control the power remaining in the through put port of the device, which can be used for dedicated non-intrusive network health monitoring. |
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Keywords: | FTTH Monolithic coupler Uniformity |
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