Effects of relative intensity noise on a multiwavelength OOCDMA communication system

✍ Scribed by K. Murugesan; V. C. Ravichandran

• Book ID: 101273845
• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 188 KB
• Volume: 24
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/(sici)1098-2760(20000305)24:5<307::aid-mop8>3.0.co;2-1

✦ Synopsis

The effects of relati¨e intensity noise RIN on the multi-( ) wa¨elength optical orthogonal code-di¨ision multiple-access OOCDMA communication system is in¨estigated with two-, three-, four-, and six-wa¨elength cases using an erbium-doped fiber laser, a graded-index ( ) ( ) multimode GI᎐MM fiber channel, and a direct-detection DD recei¨er assuming chip synchronization between user codewords, performing Gaussian approximation analysis. It re¨eals that RIN affects the error performance of the system significantly, for example, with w s 3, P s s y50 dB, RIN s y120 dB r Hz, s s 10,000, and M s 56, P is 9.09 = e 10 y 9 compared to 1.72 = 10 y 14 without RIN, showing more than four orders of increase in magnitude. When P s y65 dB, P increases with s e an increase in the number of wa¨elengths w with RIN and without RIN for a specified modal parameter s. On increased power, say y50 dB, P e decreases with an increase in w without RIN, while the ¨ariation with RIN is neither increasing nor decreasing uniformly for large ¨alues of s. This result in system error performance not only depends on the recei¨ed laser power and the number of wa¨elengths, but also on the presence of RIN and the modal parameter.