Invention Grant
- Patent Title: Optical transmitting apparatus and optical multiplexing unit
- Patent Title (中): 光发射装置和光复用单元
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Application No.: US12385071Application Date: 2009-03-30
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Publication No.: US08331787B2Publication Date: 2012-12-11
- Inventor: Takeshi Noma , Haruki Tanaka , Yoshikazu Nakanishi , Makoto Ohtou , Hideaki Sugiya , Ichiro Nakajima , Toshihiro Suzuki
- Applicant: Takeshi Noma , Haruki Tanaka , Yoshikazu Nakanishi , Makoto Ohtou , Hideaki Sugiya , Ichiro Nakajima , Toshihiro Suzuki
- Applicant Address: JP Kawasaki
- Assignee: Fujitsu Limited
- Current Assignee: Fujitsu Limited
- Current Assignee Address: JP Kawasaki
- Agency: Staas & Halsey LLP
- Priority: JP2008-155942 20080613
- Main IPC: H04J14/02
- IPC: H04J14/02 ; H04J14/00 ; H04B10/04
Abstract:
Even during a protection period in which a state transition is not caused from an ALC state to an ALD state, when an output light level that is inputted is below a threshold for ALC transition read from a memory, a processor causes a transition by switching an internal state from an ALC state to an ALD state. Then, an ALD operation is started, outputting a control voltage to a VAT control unit so as to achieve a predetermined fixed attenuation amount.
Public/Granted literature
- US20090310969A1 Optical transmitting apparatus and optical multiplexing unit Public/Granted day:2009-12-17
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