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Synchronized etalon filters for standardizing WDM transmitter laser wavelengths

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2 Author(s)
Chung, Y.C. ; AT&T Bell Lab., Holmdel, NJ, USA ; Stulz, L.W.

The authors report a simple technique to synchronize solid etalons which provides identical sets of equally spaced absolute reference frequencies. To demonstrate the principle, 1-mm-thick fused silica etalons were synchronized to have identical sets of resonant frequencies at 195.579+or-n*0.1034 THz, where n is any integer. These references were temperature-insensitive with the aid of a temperature control loop. These synchronized etalons could be used for standardizing the wavelengths of transmitter lasers in large-scale WDM wavelength division multiplexed networks.<>

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Photonics Technology Letters, IEEE  (Volume:5 ,  Issue: 2 )