Analysis of the Multimode Fiber at Low-Frequency Passband Region

Jaruwat Patmanee, Surachet Kanprachar

Abstract


Multimode fibers have been used in communication systems for more than 40 years. The characteristics of such fibers have been investigated and it has shown that not just the 3-dB modal bandwidth of multimode fibers, but the high-frequency passbands can also be used to carry the signal; resulting in an increase of the data rate transmitted by a multimode fiber. However, the low-frequency passbands of multimode fibers have not been studied intensively. In this work, the characteristics of low-frequency passbands of multimode fibers are considered. The peak frequency, the amplitude, and the bandwidth of each possible passband are studied. From the simulation results, it is found that these parameters can be estimated. The approximation formulas for these three important parameters are given. Using the results found, the low-frequency passbands of multimode fibers can be utilized; thus, in comparison to the data rate obtained from the 3-dB modal bandwidth, a higher data rate for transmitting a signal over a multimode fiber can be increased at least 3 folds.

Keywords


Multimode Fibers; Passbands; Peak Frequency; Peak Amplitude, Bandwidth;

Full Text:

PDF

References


G. Keiser, Optical Fiber Communications: McGraw-Hill, 2010.

S. Kanprachar and I. Jacobs, “Diversity coding for subcarrier multiplexing on multimode fibers,” IEEE Transactions on Communications, vol.51, pp 1546-1553, September 2003.

S. Kanprachar, W. Naku and I. Ngamroo, “High Frequency Characteristics of Multimode Fibers with Rayleigh Distributed Mode Delays,” IEANG, Transactions on Engineering Technology, vol. 7, pp. 403-413, Febuary 2012.

W. Naku, C. Pinthong and S. Kanprachar, “Bandpass Transmission Characteristics of Multimode Fibers using Gaussian Distribution,” in ECTI-CON, Khon Kaen, Thailand, 2011.

W. Naku, C. Pinthong and S. Kanprachar, “Analysis of Multimode Fiber Bandpass Characteristics using Gaussian Distributed Delays,” in ECTI-CON, Phetburi, Thailand, 2012.

S. Kanprachar, “Effects of Bandpass Bandwidth in Bit-Rate and Distance of Subcarrier Multiplexing on Multimode Fiber,” in ICOCN2012, Chonburi, Thailand, 2012.

M. Kowalczyk, “A spectral effective transmission beyond a baseband of the multimode fiber,” in Photonics Global Conference (PGC), Singapore, 2012.

I. Gasulla and J. Capmany, “Simultaneous baseband and radio over fibre signal transmission over 5 km MMF links,” in Microwave Photonics, 2008., Gold Coast, Queensland, 2008.

H. Yang, S. C. J. Lee, E. Tangdiongga, C. Okonkwo, H. P. A. v. d. Boom, F. Breyer, et al., “47.4 Gb/s Transmission Over 100 m Graded-Index Plastic Optical Fiber Based on Rate-Adaptive Discrete Multitone Modulation,” Journal of Lightwave Technology, vol. 28, pp. 352-359, 2010.

Y. Zhang and K. Iwashita, “MIMO transmission using SCM with modal diversity in multimode fiber systems,” in Optical Communications and Networks (ICOCN 2011), 10th International Conference on, 2011, pp. 1-2.

E. Giacoumidis, S. K. Ibrahim, J. Zhao, J. M. Tang, A. D. Ellis, and I. Tomkos, “Experimental and Theoretical Investigations of IntensityModulation and Direct-Detection Optical Fast-OFDM Over MMFLinks,” IEEE Photonics Technology Letters, vol. 24, pp. 52-54, 2012.

E. Hugues-Salas, Q. Zhang, R. P. Giddings, M. Wang, and J. Tang, “Adaptability-enabled record-high and robust capacity-versus-reach performance of real-time dual-band optical OFDM signals over various OM1/OM2 MMF systems [invited],” IEEE/OSA Journal of Optical Communications and Networking, vol. 5, pp. A1-A11, 2013.

E. Hugues-Salas, Q. W. Zhang, R. P. Giddings, M. Wang, and J. M. Tang, “Record-high and robust capacity versus reach performance of adaptive real-time dual-band optical OFDM signals for upgrading legacy MMF systems,” in Future Network and Mobile Summit (FutureNetworkSummit), 2013, pp. 1-10.

A. M. Kabbour, A. Amphawan, H. A. Fadhil, and S. A. Aljunid, “Selective mode excitation in SCM-OCDMA,” in 2013 IEEE 4th International Conference on Photonics (ICP), 2013, pp. 200-202.

Song, Houbing, and Maite Brandt-Pearce, “Model-centric nonlinear equalizer for coherent long-haul fiber-optic communication systems,” in 2013 IEEE Global Communications Conference (GLOBECOM 2013), 2013.

A. Rahim, S. Schwarz, J. Bruns, L. Zimmermann, S. J. Ahmed, C. G. Sch, et al., “16-channel O-OFDM demultiplexer in silicon photonics,” in Optical Fiber Communications Conference and Exhibition (OFC), 2014, pp. 1-3.


Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.

ISSN: 2180-1843

eISSN: 2289-8131