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. 2005 Mar;17(3):678-680.
doi: 10.1109/LPT.2004.841003.

Wide Tuning Range Wavelength-Swept Laser With Two Semiconductor Optical Amplifiers

W Y Oh  1 , S H Yun, G J Tearney, B E Bouma
Affiliations

Wide Tuning Range Wavelength-Swept Laser With Two Semiconductor Optical Amplifiers

W Y Oh et al. IEEE Photonics Technol Lett. 2005 Mar.

Abstract

We demonstrate a wide tuning range high-speed wavelength-swept semiconductor laser based on a polygon scanning filter that is common to two laser cavities. Linear wavelength tuning was achieved over 145 nm around 1310 nm at a tuning repetition rate of 20 kHz. The wavelength tuning filter is expandable to accommodate multiple semiconductor optical amplifiers for further widening of the laser wavelength tuning range.

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Figures

Fig. 1
Fig. 1
Schemes for combining two SOAs. (a) Serial configuration, (b) parallel configuration, and (c) two laser cavity configuration.
Fig. 2
Fig. 2
(a) Schematic of the polygon scanning filter. (b) Schematic of the wavelength-swept laser. PC: Polarization controller.
Fig. 3
Fig. 3
Integrated spectrum of (a) the laser based on SOA1, (b) the laser based on SOA2, and (c) two synchronized lasers combined. Inset: Normalized ASE spectrum of each SOA.
Fig. 4
Fig. 4
(a) Interferogram of the laser measured from a Michelson interferometer with a constant delay. (b) Time-varying laser center wavelength. (c) Laser center wavelength deviation from linear tuning.
See this image and copyright information in PMC

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