All-optical NRZ-to-inverted-RZ converter with extinction ratio enhancementusing a modified terahertz optical asymmetric demultiplexer

Authors
Lee, HJ Kim, KJ Choi, JY Kim, HG Yim, CH
Citation
Hj. Lee et al., All-optical NRZ-to-inverted-RZ converter with extinction ratio enhancementusing a modified terahertz optical asymmetric demultiplexer, IEICE TR EL, E82C(2), 1999, pp. 335-337
Citations number
7
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
IEICE TRANSACTIONS ON ELECTRONICS
ISSN journal
09168524 → ACNP
Volume
E82C
Issue
2
Year of publication
1999
Pages
335 - 337
Database
ISI
SICI code
0916-8524(199902)E82C:2<335:ANCWER>2.0.ZU;2-M
Abstract
To enhance the extinction ratio (ER) of NRZ-to-inverted-RZ converter based on cross-gain compression of a semiconductor optical amplifier (SOA), a mod ified 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 inpu t optical NRZ signal. The proposed NRZ-to-inverted-RZ converter enhances an d regulates ER to a high value (14.5 dB) for very wide optical NRZ signal i ntensity range.