Accession Number:

ADA247618

Title:

Subcarrier-Multiplexed Coherent Optical Video Transmission Using Direct Frequency Modulation of Semiconductor Lasers

Descriptive Note:

Corporate Author:

STANFORD UNIV CA DEPT OF ELECTRICAL ENGINEERING

Personal Author(s):

• Fan, J. C.
• Kazovsky, L. G.

Report Date:

1991-01-01

Pagination or Media Count:

15.0

Abstract:

An analog subcarrier-multiplexing SCM coherent optical system for video transmission using direct frequency modulation of semiconductor lasers is analyzed. Receiver sensitivity, corresponding to a 56 dB SNR at the output video ports, is approximately -38 dBm for 50 channels and -25 dBm for 100 channels using the FM subcarrier modulation format. These results are obtained for realistic values of receiver thermal noise 3.31 x 10 -22A2Hz, laser linewidth 40 MHz, RIN -150 dBHz, and optical bandwidth 20 GHz. Linewidth- induced performance degradation is found to be negligible for up to 50 channels.

Descriptors:

• *SEMICONDUCTOR LASERS
• OUTPUT
• DEGRADATION
• FREQUENCY MODULATION
• SEMICONDUCTORS
• CHANNELS
• SENSITIVITY
• RECEIVERS
• FORMATS
• ANALOGS
• MODULATION
• FREQUENCY
• LASERS

Subject Categories:

• Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE