Experimental Demonstration of a Cost-Effective Broadcast Overlay for a Commercial WDM PON

Noise-suppressed mutually injected Fabry-Perot laser diodes for 10-Gb/s broadcast signal transmission in WDM passive optical networks

“…However, it is rather inefficient to provide broadcast services which are essentially based on a point-to-multipoint service. In recent years, a number of methods has been proposed to deliver broadcast data over the WDM-PON by employing various multiplexing techniques in wavelength [2][3][4][5][6][7], radio frequency [8][9][10], and polarization [11] domains. Among them, the wavelength band multiplexing can be preferable to the costsensitive WDM-PON due to easy separation of the broadcast signal from the existing downstream signal and unnecessary modification of a remote node (RN), thanks to a cyclic property of an arrayed-waveguide grating (AWG).…”

“…However, there are challenges related to limited launch power and high intensity noise originated from amplified spontaneous emission (ASE)-ASE beating after spectrum slicing by the AWG. Recently, a high-power superluminescent diode (SLED) was used to transmit the 1.25-Gb/s non-return-to-zero (NRZ) broadcast signal by help of a forward error correction (FEC) [3]. Taking advantage of the unpolarized ASE from an Erbium-doped fiber amplifier (EDFA), the relative intensity noise (RIN) can be improved by 3 dB relative to the polarized SLED [4].…”

1.25 Gb/s Broadcast Signal Transmission in WDM-PON Based on Mutually Injected Fabry-Perot Laser Diodes

“…The transmission data rate is also limited to 622-Mb/ s/channel by ASE-ASE beat noise, though. Recently, the 1.25-Gb/s/channel broadcast signal transmission based on a high-power superluminescent diode (SLED) is successfully demonstrated over 32 channels [9]. However, this demonstration needs a forward error correction (FEC).…”