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—We demonstrate a bidirectional 12-channel wavelength division -multiplexing passive optical network (WDM-PON) with 50-GHz channel spacing based on wavelength-locked Fabry–Pérot laser diodes. The maximum transmission length is 30 km including 20 km of feeder fiber and 10 km of distribution fiber. The proposed WDM-PON system can accommodate 80 channels with… (More)
We propose and experimentally demonstrate a novel protection scheme for wavelength-division-multiplexed passive optical network (WDM-PON) employing colorless optical transceivers. The proposed network employs 2 x N arrayed waveguide grating (AWG) to utilize its routing characteristics. The colorless operation is achieved by using wavelength-locked… (More)
Viscoplasticity has been considered to be a dominant element in causing the nucleation of shear instability leading to lithospheric weakening. Here, we propose that a simple contrast in shear moduli may be sufficient for explaining the fast timescale asymmetric shear instability in a bimaterial setting. Not much attention has been paid to heterogeneous… (More)
We demonstrate 12-channel WDM-PON with 50 GHz channel spacing based on low cost wavelength locked Fabry-Perot laser diodes. The proposed WDM-PON can accommodate 80 channels with EDFA based broadband light source.
We propose a multiple star wavelength division multiplexing-passive optical network (WDM-PON) to serve several subscriber groups located at a widely distributed area. The architecture based on a band splitting WDM (BSWDM) filter separates upstream and downstream bands to several sub-bands and assign them to different subscriber groups. As a result, it… (More)
 Problems associated with shear zone development in the lithosphere involve features of widely different time scales, since the gradual buildup of stress leads to rapid and localized shear instability. These phenomena have a large stiffness in time domain and cannot be solved efficiently by a single time-integration scheme. This conundrum has forced us… (More)
We demonstrate 4-channel WDM-PON with 50 GHz channel spacing based on wavelength locked F-P LDs. The transmission bit rate and the length between the CO and the subscriber is 155 Mb/s and 20 km, respectively. The proposed WDM-PON can accommodate 80 channels with EDFA based broadband light source.
A bidirectional long-reach 64-channel DWDM-PON with 50 GHz channel spacing based on wavelength-locked Fabry-Perot laser diodes is demonstrated. It consolidates a metro network into an access network by bypassing the central offices within its reach.