Invention Grant
- Patent Title: Tunable optical network unit for multi-wavelength passive optical network system and operating method thereof
- Patent Title (中): 用于多波长无源光网络系统的可调光网络单元及其操作方法
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Application No.: US14694224Application Date: 2015-04-23
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Publication No.: US09397778B2Publication Date: 2016-07-19
- Inventor: Jie Hyun Lee , Heuk Park , Jyung Chan Lee , Sang Soo Lee
- Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
- Applicant Address: KR Daejeon
- Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
- Current Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
- Current Assignee Address: KR Daejeon
- Agency: Ladas & Parry LLP
- Priority: KR10-2014-0048914 20140423; KR10-2015-0056500 20150422
- Main IPC: H04B10/00
- IPC: H04B10/00 ; H04J14/02 ; H04J14/00

Abstract:
A tunable optical network unit (ONU) for a multi-wavelength passive optical network (MW PON) system and an operation method thereof are provided. The tunable ONU includes a cyclic tunable filter configured to have cyclic wavelength transmission properties that allow all wavelength channels of both a downstream signal and an upstream signal and to vary a wavelength to pass therethrough; a wavelength splitter configured to split an upstream signal wavelength band and a downstream signal wavelength band; a photodetector element configured to detect a downstream signal that is transmitted through the wavelength splitter, passing through the cyclic tunable filter which is aligned to a specific downstream signal wavelength channel; and a tunable transmitter configured to output to the wavelength transmitter an upstream signal of a wavelength channel that is determined based on an aligned downstream signal wavelength channel of the cyclic tunable filter.
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