- 6 x 86 Gb/s WDM transmission over 2 km multimode fiber using center launching technique and multi-level modulationHwan Seok Chung
Optical Internet Research Department, Electronics and Telecommunications Research Institute ETRI, Yuseong, Daejeon, Korea
Opt Express 17:8098-102. 2009..The transmission performance over OM2 grade multimode fiber is also compared with OM3 grade multimode fiber and conventional single mode fiber...
- Companding transform based SPM compensation in coherent optical OFDM transmissionHwan Seok Chung
Opt Express 19:B702-9. 2011..The results of bit-error-rate (BER) measurements show that the μ-law companding improves OSNR margin over 5.5 dB after transmission of 1,040 km over SMF...
- Digital non-data-aided symbol synchronization in optical coherent intradyne receptionSun Hyok Chang
Optical Communications Research Center, Electronics and Telecommunications Research Institute 138 Gajeongno, Yuseong, Daejeon, Korea
Opt Express 16:15097-103. 2008..The feedback loop operates stable in the range of symbol rate, 9.7 approximately 10.3 GSymbol/s with 20 GSampling/s at relatively high bit error rate of approximately 2x10(-2)...