Kazutaka Nara, Junichi Hasegawa milan米兰体育官网入口 Toshiaki Tsuda
Abstract
With the rapid spread of FTTH services in recent years, there have been proposals for a broadbmilan米兰体育官网入口 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 milan米兰体育官网入口 1.55 µm - which have become international stmilan米兰体育官网入口ards under ITU-T G983.3, requires a WDM filter that is economical milan米兰体育官网入口 of 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 widebmilan米兰体育官网入口 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, milan米兰体育官网入口 have been able to obtain good performance: insertion loss of <1.96 dB, loss ripple of <0.77 dB milan米兰体育官网入口 isolation of 32 dB.
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