Discretely tunable single-longitudinal-mode fiber laser stabilized to the channel of the ITU-T grid

Han Young Ryu; Won-Kyu Lee; Ho-Suhng Suh

doi:10.1117/1.2835693

1 January 2008 Discretely tunable single-longitudinal-mode fiber laser stabilized to the channel of the ITU-T grid

Han Young Ryu, Won-Kyu Lee, Ho-Suhng Suh

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Optical Engineering, Vol. 47, Issue 1, 015004 (January 2008). https://doi.org/10.1117/1.2835693

Abstract

We propose a fiber ring laser that operates in a single longitudinal mode by incorporating unpumped erbium-doped fiber as a saturable absorber filter. This laser can be discretely tuned to a 25-GHz-spacing grid that precisely matches ITU-T (International Telecommunication Union, Telecommunication Standardization Sector) grids, which are reference frequencies for optical communication systems. This laser has a signal-to-source spontaneous emission ratio higher than 60 dB, and the lasing frequencies of 361 channels are matched to ITU-T grids with excellent power flatness. With one channel of this fiber laser, we place the reference frequency near the absolute frequency reference (AFR, 193.1 THz). The relative frequency stability of the laser and the frequency offset from the AFR were less than 1.6×10^-8(integrated time, 5 min) and 30 MHz, respectively.

©(2008) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Han Young Ryu, Won-Kyu Lee, and Ho-Suhng Suh "Discretely tunable single-longitudinal-mode fiber laser stabilized to the channel of the ITU-T grid," Optical Engineering 47(1), 015004 (1 January 2008). https://doi.org/10.1117/1.2835693

Published: 1 January 2008

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KEYWORDS

Fiber lasers

Optical filters

Laser stabilization

Telecommunications

Standards development

Tunable filters

Optical communications

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