Kazutaka Nara, Junichi Hasegawa and Toshiaki Tsuda
Abstract
With the rapid spreamilan米兰体育官网入口 FTTH services in recent years, there have been proposals for a broadband passive optical network (B-PON) system that combines data transmission services with simultaneous video distribution services. Taking advantage of the new wavelength assignments - 1.31, 1.49 and 1.55 µm - which have become international standards under ITU-T G983.3, requires a WDM filter that is economical anmilan米兰体育官网入口 high functionality to multiplex these three wavelengths. Specifically, central offices require compact WDM modules that contain WDM filter arrays.
Accordingly we have developed an 8-channel 3-wavelenth wideband WDM filter array using a new optical circuit configuration based on a Mach-Zehnder interferometer (MZI) that uses silica-based planar lightwave circuit (PLC) technology, and have been able to obtain good performance: insertion loss of <1.96 dB, loss ripple of <0.77 dB and isolation of 32 dB.
Full Text(PDF 739KB)