Invention Grant
- Patent Title: WDM PON based on DML
- Patent Title (中): 基于DML的WDM PON
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Application No.: US12028675Application Date: 2008-02-08
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Publication No.: US07991291B2Publication Date: 2011-08-02
- Inventor: Yasuhiro Matsui , Kevin McCallion
- Applicant: Yasuhiro Matsui , Kevin McCallion
- Applicant Address: US CA Sunnyvale
- Assignee: Finisar Corporation
- Current Assignee: Finisar Corporation
- Current Assignee Address: US CA Sunnyvale
- Agency: Maschoff Gilmore & Israelsen
- Main IPC: H04B10/04
- IPC: H04B10/04 ; H04B10/00 ; H04J14/02 ; H04J14/00

Abstract:
Low-cost FP lasers can be implemented in the upstream links of a WDM PON system by configuring them for single-mode operation. In a typical embodiment, an FP laser at a subscriber unit is injection seeded with CW seed light from a DFB laser or an ASE source at a central office to enable single-mode operation of the FP laser. The FP laser is directly modulated and the resulting optical data signal is transmitted upstream to the central office. At the central office, an optical spectrum reshaper/bandpass optical filter is positioned in front of an optical receiver to enhance the extinction ratio of the optical data signal and generate a vestigial sideband. A wavelength locker can also be implemented at the central office to stabilize the wavelength of the master DFB laser and the injection-seeded FP laser.
Public/Granted literature
- US20080193132A1 WDM PON BASED ON DML Public/Granted day:2008-08-14
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