Tunable Photonic Microwave Bandpass Filter Based on EOPM and VPBS

A tunable photonic microwave bandpass filter with negative coefficient based on an electro-optic phase modulator (EOPM) and a variable polarization beamsplitter (VPBS) is demonstrated. A two-tap microwave bandpass filter with one negative coefficient is presented. The chromatic dispersion and optical coherence are not affected on this filter.




References:
[1] J. Capmany, B. Ortega, and D. Pastor, "A tutorial on microwave photonic filters," J. Lightw. Technol., vol. 24, no. 1, pp. 201-229, Jan.2006.
[2] R. A. Minasian, "Photonic signal processing of microwave signals,"
IEEE Trans. Microw. Theory Tech., vol. 54, no. 2, pp. 832-846, Feb. 2006.
[3] S. Sales, J. Capmany, J. Marti, and D. Pastor, "Experimental demonstration of fiber-optic delay line filters with negative coefficients," Electron. Lett., vol. 31, no. 13, pp. 1095-1096, Jul. 1995.
[4] F. Coppinger, S. Yegnanarayanan, P. D. Trinh, and B. Jalali, "All-optical
RF filter using amplitude inversion in a semiconductor optical amplifier," IEEE Trans. Microw. Theory Tech., vol. 45, no. 8, pp. 1473-1477, Aug. 1997.
[5] X. Wang and K. T. Chan, "Tunable all-optical incoherent bipolar delayline
filter using injection-locked Fabry-Pérot laser and fiber Bragg
gratings," Electron. Lett., vol. 36, no. 24, pp. 2001-2002, Dec. 2000.
[6] S. Li, K. S. Chiang, W. A. Gambling, Y. Liu, L. Zhang, and I. Bennion,
"A novel tunable all-optical incoherent negative-tap fiber-optic transversal filter based on a DFB laser diode and fiber Bragg gratings,"
IEEE Photon. Technol. Lett., vol. 12, no. 9, pp. 1207-1209, Sep. 2000.
[7] E. H.W. Chan and R. A. Minasian, "Novel all-optical RF notch filters
with equivalent negative tap response," IEEE Photon. Technol. Lett.,
vol. 16, no. 5, pp. 1370-1372, May 2004.
[8] J. Wang, F. Zeng, and J. P. Yao, "All-optical microwave bandpass filters
implemented in a radio-over-fiber link," IEEE Photon. Technol. Lett.,
vol. 17, no. 8, pp. 1737-1739, Aug. 2005.
[9] G. Ning , P. Shum, S. Aditya, Linghao Cheng, and H. Dong, "Bandpass
multitap microwave photonic filter with a round-trip configuration,"
Microwave and Optical Technology Letters., vol. 50, no. 5, pp. 1181-
1184, May 2008.
[10] F. Zeng and J. P. Yao, "Investigation of phase modulator based alloptical
bandpass filter," J. Lightw. Technol., vol. 23, no. 4, pp. 1721-
1728, Apr. 2005.
[11] Q. Wang, J. P. Yao, and J. D. Bull, "Negative tap photonic microwave
filter based on a Mach-Zehnder modulator and a tunable optical
polarizer," IEEE Photonics Technology Letters, vol. 19, no. 21, pp.
1750-1752, Nov. 2007.
[12] G. Ning , P. Shum, "Switchable and tunable microwave photonic filter
using a variable polarization beamsplitter in a Sagnac interferometer," J.
Opt. A: Pure Appl. Opt., vol. 9, no. 12, pp. 1136-1139, Dec. 2007.