The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 2020
Filed:
Jul. 27, 2018
Huawei Technologies Co., Ltd., Shenzhen, CN;
Jun Luo, Shenzhen, CN;
Zhiyong Feng, Shenzhen, CN;
HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CN;
Abstract
A wavelength tunable optical transmitter apparatus relates to the field of communications technologies and includes a plurality of multi-longitudinal mode lasers (), a cyclic wavelength demultiplexer/multiplexer (), and a reflector (). The multi-longitudinal mode lasers output multi-longitudinal mode signals having a periodically repeated frequency interval, where the period is Δfmode. The cyclic wavelength demultiplexer/multiplexer performs periodically repeated filtering on the multi-longitudinal mode signals input by the multi-longitudinal mode lasers, to obtain single frequency signals, where a repetition period of a filter window is Δfband, Δfmode is different from Δfband, and Δfmode and Δfband are not in an integer-multiple relationship, and then, multiplexes the plurality of single frequency signals and outputs the multiplexed signal. The reflector reflects the multiplexed signal. The reflected multiplexed signal separately returns to the multi-longitudinal mode laser by using the cyclic wavelength demultiplexer/multiplexer again.