Abstract

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 $>10\mathrm{dB}$ 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.

© 2011 Optical Society of America

Polarization-diversified photonic comb filter with independently tunable free spectrum range

H.-Y. Jiang, L.-S. Yan, J. Ye, W. Pan, B. Luo, and X.-H. Zou
Opt. Lett. 39(16) 4970-4973 (2014)

Tunable microwave filter that uses a high-birefringent fiber and a differential-group-delay element

G. X. Ning, S. Aditya, P. Shum, N. Liu, Y. D. Gong, and Chao Lu
J. Opt. Soc. Am. A 22(5) 913-916 (2005)

Polarization-independent and tunable comb filter based on a free-space coupling technique

Haifeng Lu, Zhuangqi Cao, Honggen Li, Qishen Shen, and Xiaoxu Deng
Opt. Lett. 31(3) 386-388 (2006)

PDM RZ-to-NRZ and NRZ-to-PRZ format conversions using a variable DGD element inside a polarization-diversified loop

H.-Y. Jiang, L.-S. Yan, J. Ye, W. Pan, B. Luo, and X. Steve Yao
Opt. Lett. 37(13) 2535-2537 (2012)

Multiwavelength picosecond and single wavelength femtosecond pulses emission in a passively mode-locked fiber laser using a semiconductor saturable absorber mirror and a contrast ratio tunable comb filter

Zhi-Chao Luo, Ai-Ping Luo, and Wen-Cheng Xu
Appl. Opt. 50(18) 2831-2835 (2011)