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Optical Engineering

Cost-effective parallel optical interconnection module based on fully passive-alignment process
Author(s): Dong Hoon Son; Young Soon Heo; Hyoung-Jun Park; Hyun Seo Kang; Sung Chang Kim
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Paper Abstract

In optical interconnection technology, high-speed and large data transitions with low error rate and cost reduction are key issues for the upcoming 8K media era. The researchers present notable types of optical manufacturing structures of a four-channel parallel optical module by fully passive alignment, which are able to reduce manufacturing time and cost. Each of the components, such as vertical-cavity surface laser/positive-intrinsic negative-photodiode array, microlens array, fiber array, and receiver (RX)/transmitter (TX) integrated circuit, is integrated successfully using flip-chip bonding, die bonding, and passive alignment with a microscope. Clear eye diagrams are obtained by 25.78 - Gb / s (for TX) and 25.7 - Gb / s (for RX) nonreturn-to-zero signals of pseudorandom binary sequence with a pattern length of 2 31 to 1. The measured responsivity and minimum sensitivity of the RX are about 0.5    A / W and 6.5    dBm at a bit error rate (BER) of 10 12 , respectively. The optical power margin at a BER of 10 12 is 7.5 dB, and cross talk by the adjacent channel is 1    dB .

Paper Details

Date Published: 21 November 2017
PDF: 4 pages
Opt. Eng. 56(11) 110503 doi: 10.1117/1.OE.56.11.110503
Published in: Optical Engineering Volume 56, Issue 11
Show Author Affiliations
Dong Hoon Son, Electronics and Telecommunications Research Institute (Republic of Korea)
Young Soon Heo, Electronics and Telecommunications Research Institute (Republic of Korea)
Hyoung-Jun Park, Electronics and Telecommunications Research Institute (Republic of Korea)
Hyun Seo Kang, Electronics and Telecommunications Research Institute (Republic of Korea)
Sung Chang Kim, Electronics and Telecommunications Research Institute (Republic of Korea)


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