Journal
OPTICS LETTERS
Volume 36, Issue 12, Pages 2305-2307Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.36.002305
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Funding
- National Basic Research Program of China [2011CB301800]
- Program for New Century Excellent Talents in University [NCET-08-0821]
- Ministry of Education
- Research Project in Sichuan Province of China [2010HH0009]
- State Key Laboratory of Advanced Optical Communication Systems and Networks of China
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An all-optical comb filter with independently tunable wavelength spacing and bandwidth (BW) is proposed. Using three cascaded variable differential-group-delay elements, we demonstrate theoretically and experimentally the tunability of the comb filter with > 10 dB sidelobe reduction by adjusting three elements. The wavelength spacing is determined by the first filter module, while the sidelobe suppression ratio and the BW are defined by the middle and the last one, respectively. (c) 2011 Optical Society of America
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