Multiwavelength fiber sources based on double-pass superfluorescent fiber sources

Author

Su, C.D. ; Wang, Lon A.

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

18

Issue

5

fYear

2000

fDate

5/1/2000 12:00:00 AM

Firstpage

708

Lastpage

714

Abstract

We demonstrate a new technique to generate a high-power multiwavelength fiber source (MWFS) by inserting cascaded long-period fiber gratings (LPFGs) in double-pass Er-doped fiber (EDF) superfluorescent fiber sources. 20 channels with extinction ratios larger than 10 dB can be obtained between 1525-1560 nm with appropriate EDF lengths. Though the total output power decreases due to the insertion of the cascaded LPFGs, the power in each channel for the proposed MWFS is larger than that obtained by using the spectrum slicing technique because of power redistribution. We also demonstrate that by using another LPFG in such a source to reduce the power variation among the desired channels. The wavelength stability of the source is shown to be determined by the cascaded LPFCs rather than by the EDF.

Keywords

diffraction gratings; erbium; light sources; optical communication equipment; optical fibres; stability; superradiance; telecommunication channels; wavelength division multiplexing; 1525 to 1560 nm; EDF; cascaded LPFC; cascaded long-period fiber gratings; double-pass Er-doped fiber; double-pass superfluorescent fiber sources; extinction ratios; high-power multiwavelength fiber source; light sources; multiwavelength fiber sources; power redistribution; power variation; spectrum slicing technique; total output power; wavelength stability; Costs; Fiber gratings; Fiber lasers; Filters; Light sources; Optical fiber communication; Power generation; Stability; Superluminescent diodes; Wavelength division multiplexing;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.842087

Filename

842087