Abstract
Distribution of multichannel video signals in the subscriber loop by subcarrier multiplexing (SCM)1 has gained increased attention recently, principally because SCM systems have attractive near-term economics. However, due to the low sensitivity of a 50-Ω receiver (−20 to −13 dBm) and limited laser launch power into single-mode fiber (≈ 0 dBm), the power budget of an SCM system is generally inadequate for point-to-multipoint distribution. This limitation can be overcome by employing traveling-wave (TW) laser amplifiers, because their wide bandwidth (40-50 nm) can accommodate all the modes of a multilongitudinal-mode laser, and they have high saturation output power (0-5 dBm). We present both experimental and analytical results of the carrier-to-noise ratio (CNR) performance of an SCM system which carries ninety FM video signals by using a high-speed GaInAsP laser and two cascaded TW amplifiers.
© 1989 Optical Society of America
PDF ArticleMore Like This
R. GROSS, M. SCHMIDT, ROBERT OLSHANSKY, and V. LANZISERA
THG3 Optical Fiber Communication Conference (OFC) 1990
C. E. ZAH and WINSTON I. WAY
FM5 Conference on Lasers and Electro-Optics (CLEO:S&I) 1989
G. R. Joyce and R. Olshansky
CFB1 Conference on Lasers and Electro-Optics (CLEO:S&I) 1992