Reduction of interferometric optical crosstalk using phase-scrambling technique

✍ Scribed by Eduward Tangdiongga; Huug de Waardt; René Jonker

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 199 KB
• Volume: 22
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/(sici)1098-2760(19990705)22:1<1::aid-mop1>3.0.co;2-l

✦ Synopsis

We discuss an interferometric crosstalk reduction concept in optical WDM networks by introducing phase dithering in optical signals. The phase dithering is generated through a phase modulator, dri¨en with filtered noise spectra. An IMrDD optical transmission scheme is used to experimentally ¨erify the effects of this reduction concept. Crosstalk and signal exhibit a worst case condition, namely, its wa¨elength and state of polarization are aligned. Experimental data show that a reduction of 7 dB for crosstalk requirement could be achie¨ed with help of a phase-scrambling technique.