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Single-Mode and Mode-Hop-Free Wavelength Sweep Light Source With Range of Over 160 nm and High Swept Frequency

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3 Author(s)
Nakamura, K. ; Opt. Module Dev. Dept., Anritsu Device Corp., Atsugi, Japan ; Morimoto, S. ; Nakayama, T.

This letter describes a single-mode and mode-hop-free wavelength sweep light source that uses a micromachined scanning mirror. The light source has a wavelength sweep range of over 160 nm in the 1.55 μm band and the repeatability of output power level of less than ±0.05 dB. The swept frequency is 307.8 Hz, and the frequency can be changed by use of a scanning mirror with a different mechanical resonance frequency. A tunable laser source was measured by a heterodyne interferometer that uses the wavelength sweep light source and it was confirmed that the side mode suppression ratio of the wavelength sweep light source was more than 50 dB.

Published in:

Photonics Technology Letters, IEEE  (Volume:22 ,  Issue: 19 )