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Inventor: Abe; Haruo
Address: Tokyo, JP
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 5978122 |
Noise suppression method for wavelength division multiplexing transmission system |
November 2, 1999 |
| A method of suppressing noise and improving the optical transmission characteristic of a wavelength division multiplexing transmission system provides lights for suppressing noise from the light sources (NS1 and NS2) which are multiplexed on the wavelength division multiplexed signal. |
| 5510930 |
Light amplifying apparatus |
April 23, 1996 |
| A light amplifying apparatus adopting a redundant structure. Optical isolators 13, 14 are inserted between pump light sources 1, 2 and a photocoupler 4 so as to prevent injection locking, thereby preventing fluctuation of pump power.In another embodiment, optical fibers 15 adequately lon |
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