Bidirectional wavelength add/drop multiplexer using two separate MUX and DEMUX pairs and reflection-type comb filters

Abstract A bidirectional wavelength add/drop multiplexer (B-WADM) using two separate multiplexer (MUX), demultiplexer (DEMUX) pairs and reflection-type comb filters (RCFs) is proposed and demonstrated. The proposed B-WADM alleviates the formerly stringent requirement on MUX/DEMUX crosstalk characteristics, while suppressing the power penalty induced by Rayleigh backscattering/optical reflection. Two types of RCFs are proposed based on fiber Bragg gratings and a reciprocal wavelength interleaver, respectively. Experimentally, a combination of an array of fiber Bragg gratings and a light absorber was used as an RCF. The measured crosstalk induced by the Rayleigh backscattering was successfully suppressed to a negligible level (−30 dB) while simultaneously achieving a high B-WADM span gain over 25 dB.

[1]  Chang-Hee Lee,et al.  A novel bidirectional add/drop amplifier (BADA) , 1998, IEEE Photonics Technology Letters.

[2]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[3]  Byoung Yoon Kim,et al.  Bidirectional wavelength-selective optical isolator , 2001 .

[4]  Byoungho Lee,et al.  Bidirectional wavelength add-drop multiplexer using multiport optical circulators and fiber Bragg gratings , 2000 .

[5]  Bogdan Hoanca,et al.  Tolerance to amplitude and group-delay ripple for systems using chirped fiber Bragg grating , 2001, LEOS 2001. 14th Annual Meeting of the IEEE Lasers and Electro-Optics Society (Cat. No.01CH37242).

[6]  M. Shikada,et al.  Rayleigh scattering influence on performance of 10 Gb/s optical receiver with Er-doped optical fiber preamplifier , 1990, IEEE Photonics Technology Letters.

[7]  Shien-Kuei Liaw,et al.  Demultiplexer crosstalk rejection requirements for hybrid WDM system with analog and digital channels , 1998 .

[8]  M. Durkin,et al.  Sinc-sampled fiber Bragg gratings for identical multiple wavelength operation , 1998, IEEE Photonics Technology Letters.

[9]  Chang-Hee Lee,et al.  Bidirectional amplifier employing the bidirectional dispersion compensation technique , 2001 .

[10]  Yun Chur Chung,et al.  Bidirectional WDM self-healing ring network based on simple bidirectional add/drop amplifier modules , 1998 .

[11]  X.J. Zhao,et al.  A novel bidirectional add/drop module using waveguide grating routers and wavelength channel matched fiber gratings , 1999, IEEE Photonics Technology Letters.

[12]  Keang-Po Ho,et al.  Analysis of homodyne crosstalk in optical networks using Gram-Charlier series , 1999 .

[13]  Chang-Hee Lee,et al.  Wavelength interleaved bidirectional add/drop amplifier module , 2000 .

[14]  Ken Howard.  San Diego , 2003, Nature.