상세정보
학술지
Large Enhancement in Linearity of Electroabsorption Modulator with Composite Quantum-Well Absorption Core
- 발행일
- 200512
- 출처
- IEICE Transactions on Electronics, v.E88-C no.5, pp.967-971
- ISSN
- 1745-1353
- 출판사
- 일본, 전자정보통신학회 (IEICE)
- 협약과제
- 05MB1400, 60GHz Pico Cell 통신용 SoP(60GHz 광대역 무선 LAN 기술 개발), 조경익
- 초록
- 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 제안 키워드
- Information and communication, Quantum Well(QW), TE Mode, TM mode, electroabsorption modulator(EAM), spurious-free dynamic range(SFDR), third-order intermodulation distortion, transfer function(DTF)