A new wavelength division multiplexed-radio over fiber (WDM-RoF) access network scheme supporting the simultaneous transmission of a 1.25-Gb/s wired data as well as a 1.25-Gb/s wireless data is proposed in this paper. An optical carrier suppression effect and sideband routing using the multiplexing of arrayed waveguide grating (AWG) with 50-GHz channel spacing are utilized to generate a millimeter wave band carrier. These techniques make the proposed architecture transmit both a wired data and a wireless one at the same time. A reflective semiconductor optical amplifier (RSOA) is employed at both central office and base station so that this architecture is operated colorlessly. Error free transmissions (BER of 10-9) of both downlink and uplink are achieved simultaneously. A rare impact of downlink transmission on the performance of uplink data is observed due to the usage of the unmodulated light.
Bibliographical noteFunding Information:
Manuscript received October 28, 2009; revised January 12, 2010; accepted February 12, 2010. Date of publication February 22, 2010; date of current version July 28, 2010. This work was supported in part by the Korea Science and Engineering Foundation (KOSEF) funded by the Korea government (MEST) under Grant 2009-0070934 and in part by the Yonsei University Institute of TMS Information Technology, a Brain Korea 21 Program, Korea.
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics