PMID- 18607411 OWN - NLM STAT- MEDLINE DCOM- 20081112 LR - 20190516 IS - 1094-4087 (Electronic) IS - 1094-4087 (Linking) VI - 16 IP - 14 DP - 2008 Jul 7 TI - Control and Stabilization of bit-wise phase correlation in 160 (4 x 40) Gbit/s OTDM signal and its impact on transmission. PG - 10039-52 AB - Detail of control technique of bit-wise phase correlation in 160 (4 x 40) Gbit/s optical time division multiplexing (OTDM) signal using a phase-correlation monitor based on 1-bit delay asymmetric interferometers (AIFs) is described. The 1-bit delay AIF transforms a bit-by-bit optical phase discontinuity to an optical power variation, so that it enables to quantify the phase-jump between adjacent bits. By use of this unique technique, we experimentally demonstrated stable generation of bitwisely phase-controlled 160 Gbit/s periodical alternate-phase return-to-Zero (APRZ) signal in addition to other different modulation formats such as conventional RZ, carrier suppressed RZ (CS-RZ), pair-wise alternate-phase CSRZ (PAP-CSRZ) and pi/2-APRZ. And long term stability was observed with CS-RZ signal. Also, we show some experimental results of 120 km un-repeatered transmission using standard single mode fiber (SSMF) and then discuss the impact of bit-wise phase change on 160 Gbit/s OTDM transmission performance. FAU - Kagawa, Masatoshi AU - Kagawa M AD - Corporate Research and Development Center, Oki Electric Industry Co., Ltd., 550-5 Higashiasakawa, Hachioji, Tokyo 193-8550, Japan. kagawa337@oki.com FAU - Murai, Hitoshi AU - Murai H FAU - Tsuji, Hiromi AU - Tsuji H FAU - Sasaki, Kensuke AU - Sasaki K FAU - Fujii, Kozo AU - Fujii K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Opt Express JT - Optics express JID - 101137103 SB - IM MH - Equipment Design MH - Fourier Analysis MH - Interferometry/*instrumentation/*methods MH - Models, Statistical MH - Models, Theoretical MH - Normal Distribution MH - *Optics and Photonics MH - Temperature MH - Transducers EDAT- 2008/07/09 09:00 MHDA- 2008/11/13 09:00 CRDT- 2008/07/09 09:00 PHST- 2008/07/09 09:00 [pubmed] PHST- 2008/11/13 09:00 [medline] PHST- 2008/07/09 09:00 [entrez] AID - 164905 [pii] AID - 10.1364/oe.16.010039 [doi] PST - ppublish SO - Opt Express. 2008 Jul 7;16(14):10039-52. doi: 10.1364/oe.16.010039.