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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 19, Iss. 5 — May. 1, 2001
  • pp: 739–

Signal Bandwidth of General N× N Multimode Interference Couplers

Hongzhen Wei, Jinzhong Yu, Zhongli Liu, Xiaofeng Zhang, Wei Shi, and Changshui Fang

Journal of Lightwave Technology, Vol. 19, Issue 5, pp. 739- (2001)


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Abstract

Analytical expression of signal bandwidth of general straight and tapered N× N multimode interference (MMI) couplers is presented. The signal bandwidth is characterized as a function of mode relative energy, mode propagation delay time, and mode pulse broadening in the multimode section of MMI coupler. The model is used to evaluate the signal bandwidth of specific couplers. Results indicate that the signal bandwidth decreases seriously with the increase of channel number and channel guide space. Compared with the straight MMI coupler, the tapered MMI coupler has an improved signal bandwidth.

© 2001 IEEE

Citation
Hongzhen Wei, Jinzhong Yu, Zhongli Liu, Xiaofeng Zhang, Wei Shi, and Changshui Fang, "Signal Bandwidth of General N× N Multimode Interference Couplers," J. Lightwave Technol. 19, 739- (2001)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-19-5-739


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