Title:
OPTICAL PULSE GENERATOR
Document Type and Number:
Japanese Patent JP3249732
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a pulse signal having pulse width shorter than that of conventional output pulse by employing two ring lasers such that a short pulse signal output from a first ring laser is inputted, as it is, to a second ring laser using an electrical signal for driving an optical modulator.
SOLUTION: The optical pulse generator comprises an electrical signal driver 1 generating an electrical signal for driving an optical modulator, a first ring laser 7 being driven by an optical modulator driving signal delivered from the electrical signal driver 1 to output an optical pulse signal by forced mode synchronization method, and a second ring laser 17 receiving the output from first ring laser 7 and multiplexing it with a circulation light signal from the second ring laser 17 to produce a pulse signal pulse width further shorter than that of optical pulse signal from the first ring laser. A short optical pulse signal from the first ring laser 7 is inputted, in the form of an optical signal, to the second ring laser 17 to produce a short optical pulse signal exceeding the limit of driving with electrical signal.
Inventors:
Kenji Kuroda
Hideki Takakura
Hideki Takakura
Application Number:
JP33675295A
Publication Date:
January 21, 2002
Filing Date:
December 25, 1995
Export Citation:
Assignee:
Terra Tech Co., Ltd.
International Classes:
H01S3/10; H01S3/06; H01S3/067; H01S3/098; H04B10/25; H04B10/516; H04B10/61; (IPC1-7): H01S3/098; H01S3/10
Domestic Patent References:
| JP6120602A | ||||
| JP715062A | ||||
| JP5102582A | ||||
| JP563258A | ||||
| JP876070A | ||||
| JP7263786A | ||||
| JP6125124A | ||||
| JP2310982A |
Attorney, Agent or Firm:
Masataka Kobayashi
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