JPS5632785A - Light amplifier - Google Patents

Light amplifier

Info

Publication number
JPS5632785A
JPS5632785A JP10766979A JP10766979A JPS5632785A JP S5632785 A JPS5632785 A JP S5632785A JP 10766979 A JP10766979 A JP 10766979A JP 10766979 A JP10766979 A JP 10766979A JP S5632785 A JPS5632785 A JP S5632785A
Authority
JP
Japan
Prior art keywords
light
accordance
amplification factor
light amplifier
resonator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP10766979A
Other languages
Japanese (ja)
Inventor
Yoshihisa Yamamoto
Haruhiko Tsuchiya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP10766979A priority Critical patent/JPS5632785A/en
Publication of JPS5632785A publication Critical patent/JPS5632785A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
    • H01S3/107—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using electro-optic devices, e.g. exhibiting Pockels or Kerr effect

Abstract

PURPOSE:To enable control or modulation at high speed of amplification factor of the light amplifier in accordance with a electric field by changing Fabry-Perot resonance frequency of the light amplifier in accordance with applied voltage. CONSTITUTION:An incident light is introduced through a reflecting mirror 3 into a resonator having reflecting mirrors 3, 4, amplified by the resonator, and emitted through the reflecting mirror 4. A laser medium 1 is pumped less than laser oscillation threshold value. In case that the phase shift amount phi=0 of the case that light is reciprocated in the resolator once back and forth is that the Fabry-Perot resonance wavelength of the light amplifier coincides with the incident light wavelength to thus obtain a maximum amplification factor. Since the amount phi is varied in accordance with the applied voltage to the electrooptical element 2, the amplification factor can be modulated by the applied electric field. When the entire system is regarded as a modulator, the modulator itself has an internal gain. Accordingly, the insertion loss can be compensated by the internal gain, and net gain can be thus obtained.
JP10766979A 1979-08-25 1979-08-25 Light amplifier Pending JPS5632785A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10766979A JPS5632785A (en) 1979-08-25 1979-08-25 Light amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10766979A JPS5632785A (en) 1979-08-25 1979-08-25 Light amplifier

Publications (1)

Publication Number Publication Date
JPS5632785A true JPS5632785A (en) 1981-04-02

Family

ID=14464992

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10766979A Pending JPS5632785A (en) 1979-08-25 1979-08-25 Light amplifier

Country Status (1)

Country Link
JP (1) JPS5632785A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62254478A (en) * 1986-04-28 1987-11-06 Yokogawa Electric Corp Variable wavelength light source
JPS6318683A (en) * 1986-07-11 1988-01-26 Nec Corp Short-optical-pulse generating device
JPH01301182A (en) * 1988-05-30 1989-12-05 Hamamatsu Photonics Kk Electric signal observation device
US4885752A (en) * 1988-03-28 1989-12-05 Hughes Aircraft Company Crystal modulated laser with improved resonator
JPH0222631A (en) * 1988-07-11 1990-01-25 Hitachi Ltd Detector for frequency multiplex optical communication
US5414726A (en) * 1992-06-15 1995-05-09 France Telecom Process and apparatus for the modulation and amplification of light beams

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS507487A (en) * 1973-05-18 1975-01-25
JPS53120392A (en) * 1977-03-30 1978-10-20 Nippon Telegr & Teleph Corp <Ntt> Compound type semiconductor laser

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS507487A (en) * 1973-05-18 1975-01-25
JPS53120392A (en) * 1977-03-30 1978-10-20 Nippon Telegr & Teleph Corp <Ntt> Compound type semiconductor laser

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62254478A (en) * 1986-04-28 1987-11-06 Yokogawa Electric Corp Variable wavelength light source
JPH0528915B2 (en) * 1986-04-28 1993-04-27 Yokogawa Electric Corp
JPS6318683A (en) * 1986-07-11 1988-01-26 Nec Corp Short-optical-pulse generating device
JPH0567076B2 (en) * 1986-07-11 1993-09-24 Nippon Electric Co
US4885752A (en) * 1988-03-28 1989-12-05 Hughes Aircraft Company Crystal modulated laser with improved resonator
JPH01301182A (en) * 1988-05-30 1989-12-05 Hamamatsu Photonics Kk Electric signal observation device
JPH0222631A (en) * 1988-07-11 1990-01-25 Hitachi Ltd Detector for frequency multiplex optical communication
JP2875537B2 (en) * 1988-07-11 1999-03-31 株式会社日立製作所 Frequency multiplexing optical communication detector
US5414726A (en) * 1992-06-15 1995-05-09 France Telecom Process and apparatus for the modulation and amplification of light beams

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