Low-threshold four-wavelength DFB laser array for multigigabit/s high-density WDM systems applications

Author

Wang, L.A. ; Lo, Y.H. ; Iqbal, M.Z. ; Young, J. ; Lin, P.S.D. ; Gozdz, A.S.

Author_Institution

Bellcore, Red Bank, NJ, USA

Volume

3

Issue

11

fYear

1991

Firstpage

965

Lastpage

968

Abstract

A high-speed four-wavelength distributed-feedback (DFB) laser array with narrow wavelength spacings ( approximately 3 nm), very low-threshold currents ( approximately 5 mA), and all wavelengths, and operating (1540-1550 nm) within the erbium-doped fiber amplifier bandwidth has been fabricated. Electrical crosstalk of less than -25 dB up to 5 GHz was measured and a small wavelength drift caused by heating effects was observed for adjacent lasers. However, neither the electrical crosstalk nor the thermal effect causes any sensitivity penalties in a high-speed wavelength-division multiplexing transmission system.<>

Keywords

distributed feedback lasers; frequency division multiplexing; multiplexing equipment; optical communication equipment; semiconductor laser arrays; 1540 to 1550 nm; 5 mA; diode lasers; distributed-feedback; electrical crosstalk; erbium-doped fiber amplifier bandwidth; four-wavelength DFB laser array; heating effects; high-density WDM systems; high-speed; low-threshold currents; narrow wavelength spacings; small wavelength drift; thermal effect; wavelength-division multiplexing transmission system; Bandwidth; Crosstalk; Erbium-doped fiber amplifier; Erbium-doped fiber lasers; Fiber lasers; Laser beam cutting; Masers; Optical arrays; Optical coupling; Wavelength division multiplexing;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.97828

Filename

97828