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Journal Article
Large Enhancement of Linearity in Electroabsorption Modulator with Composite Quantum-Well Absorption Core
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- Authors
- Yong Duck Chung, Young Shik Kang, Ji Youn Lim, Sung Bock Kim, Je Ha Kim
- Issue Date
- 2005-12
- Citation
- IEICE Transactions on Electronics, v.E88-C, no.5, pp.967-971
- ISSN
- 1745-1353
- Publisher
- 일본, 전자정보통신학회 (IEICE)
- Language
- English
- Type
- Journal Article
- Abstract
- We proposed a novel structure that improved the linear characteristics of electroabsorption modulator (EAM) with composite quantum-wells as an absorption core layer. We fabricated three types of EAM's whose active cores were 8nm thick, 12nm thick and a composite core with 8nm thick and 12nm thick quantum-well (QW), respectively. The transfer functions of EAM's were investigated and their third-order inter-modulation distortion (IMD3) was obtained by calculation. The spurious free dynamic range (SFDR) was measured and compared with three types of QW. The linearity of the device with composite quantum-well showed a large enhancement in SFDR by 9.3 dB 쨌 Hz 2/3 in TE mode and 7.0 dB 쨌 Hz2/3 in TM mode compared with the conventional EAM. Copyright © 2005 The Institute of Electronics, Information and Communication Engineers.
- KSP Keywords
- Electroabsorption modulator(EAM), Information and communication, TE Mode, TM mode, quantum wells, spurious-free dynamic range(SFDR), third-order intermodulation distortion, transfer function(DTF)