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All-Optical NRZ-to-Inverted-RZ Converter with Extinction Ratio Enhancement Using a Modified Terahertz Optical Asymmetric Demultiplexer

Hyuek Jae LEE, Kwangjoon KIM, Jee Yon CHOI, Hae-Geun KIM, Chu Hwan YIM

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Summary :

To enhance the extinction ratio (ER) of NRZ-to-inverted-RZ converter based on cross-gain compression of a semiconductor optical amplifier (SOA), a modified terahertz optical asymmetric demultiplexer (TOAD) is cascaded. ER is improved from 1.6-6.7 dB to 5.4-14.5 dB, depending on the intensity of input optical NRZ signal. The proposed NRZ-to-inverted-RZ converter enhances and regulates ER to a high value (14.5 dB) for very wide optical NRZ signal intensity range.

Publication
IEICE TRANSACTIONS on Communications Vol.E82-B No.2 pp.387-389
Publication Date
1999/02/25
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section LETTER (Joint Special Issue on Photonics in Switching: Systems and Devices)
Category
Photonic Switching Devices

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