On the merging of millimeter-wave fiber-radio backbone with 25-GHz WDM ring networks

We present an optical modulation and distribution scheme that incorporates subcarrier-multiplexed (SCM) transport with remote local oscillator (LO) delivery for a millimeter-wave (mm-wave) fiber-radio backbone driving a sectorized antenna interface. The proposed method is compatible with a standard wavelength-division multiplexing infrastructure with a 25-GHz channel spacing. We also characterize the profiles and bandwidths of the optical filters, which are essential for the adding and dropping of the 25-GHz signal block and the optical extraction of the LO signal. The placement of the LO signal within the 25-GHz band is investigated and its effect on the filter bandwidth requirements and system performance quantified. The performance of a ring incorporating the distribution scheme is evaluated via simulation. It is established that a compromise must be made between the feasibility of the required filters and the incurred penalty due to intermodulation distortions from adjacent blocks.

[1]  U. Gliese,et al.  Chromatic dispersion in fiber-optic microwave and millimeter-wave links , 1996 .

[2]  D. Novak,et al.  Broadband millimeter-wave fiber-radio network incorporating remote up/downconversion , 1998, 1998 IEEE MTT-S International Microwave Symposium Digest (Cat. No.98CH36192).

[3]  Dalma Novak,et al.  Overcoming chromatic-dispersion effects in fiber-wireless systems incorporating external modulators , 1997 .

[4]  Rod Waterhouse,et al.  Broadband printed sectorized coverage antennas for millimeter-wave wireless applications , 2002 .

[5]  David Graham Moodie,et al.  Novel techniques for high-capacity 60-GHz fiber-radio transmission systems , 1997 .

[6]  D. Novak,et al.  A millimeter-wave full-duplex fiber-radio star-tree architecture incorporating WDM and SCM , 1998, IEEE Photonics Technology Letters.

[7]  Leon Poladian,et al.  A WDM fiber-radio system with improved optical spectral efficiency incorporating remote LO delivery and novel FBG optical filtering , 2003, OFC 2003 Optical Fiber Communications Conference, 2003..

[8]  A. Nirmalathas,et al.  Millimeter-wave broad-band fiber-wireless system incorporating baseband data transmission over fiber and remote LO delivery , 2000, Journal of Lightwave Technology.

[9]  H. Ogawa,et al.  Millimeter-wave fiber optics systems for personal radio communication , 1992 .

[10]  U. Gliese,et al.  Multi-functional fibre-optic microwave links , 1998 .

[11]  J. Laskar,et al.  A compact LTCC Ku-band transmitter module with integrated filter for satellite communication applications , 2001, 2001 IEEE MTT-S International Microwave Sympsoium Digest (Cat. No.01CH37157).

[12]  H. Schmuck.  Comparison of optical millimetre-wave system concepts with regard to chromatic dispersion , 1995 .

[13]  W. Heinrich,et al.  Low phase-noise GaInP/GaAs-HBT MMIC oscillators up to 36 GHz , 2001, 2001 IEEE MTT-S International Microwave Sympsoium Digest (Cat. No.01CH37157).