Effect of reflections on unisolated 2.5 Gbit/s gain-coupled 1300-nm DFBs over the -20/spl deg/C to +85/spl deg/C temperature range

Author

Ring, W.S. ; Wrathall, S. ; Taylor, Antoinette J. ; Park, C.A.

Author_Institution

Hewlett-Packard, Ipswich, UK

fYear

1998

fDate

22-27 Feb. 1998

Firstpage

12

Lastpage

13

Abstract

Summary form only given. We have investigated gain-coupled 1300-nm DFB lasers for 2.5 Gbit/s operation without optical isolators to understand the affect on the system performance. Wide-temperature operation of unisolated 2.488 Gbit/s gain-coupled DFBs with grating strength of 90 cm/sup -1/, exhibit no saturation of the BER curve. The measured penalty is <1 dB worst case up to -14 dB optical return loss. These results highlight the fact that gain-coupled 1300-nm uncooled DFBs could be used in low-cost unisolated modules at 2.488 Gbit/s over the -20/spl deg/C-+85/spl deg/C temperature range.

Keywords

distributed feedback lasers; laser noise; optical communication equipment; optical losses; quantum well lasers; -20 to 85 C; 2.488 Gbit/s; 2.5 Gbit/s; BER characteristics; BH MQW DFB LD; filtered eye diagrams; gain-coupled DFB lasers; grating strength; low-cost unisolated modules; reflections effect; return loss effect; system performance; unisolated lasers; wide-temperature operation; Distributed feedback devices; Dynamic range; Frequency; Laser feedback; Optical feedback; Optical filters; Optical noise; Optical reflection; Optical saturation; Optical sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Fiber Communication Conference and Exhibit, 1998. OFC '98., Technical Digest

Conference_Location

San Jose, CA, USA

Print_ISBN

1-55752-521-8

Type

conf

DOI

10.1109/OFC.1998.657162

Filename

657162