Masato Yoshida

Summary

Affiliation: Tohoku University
Country: Japan

Publications

  1. ncbi request reprint Regeneratively mode-locked fiber laser with a repetition rate stability of 4.9x10-15 using a hydrogen maser phase-locked loop
    Masato Yoshida
    1Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Aoba ku, Sendai, Miyagi, 980 8577 Japan
    Opt Lett 32:1827-9. 2007
  2. ncbi request reprint 10 GHz regeneratively mode-locked semiconductor optical amplifier fiber ring laser and its linewidth characteristics
    Masato Yoshida
    Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Aoba ku, Sendai, Miyagi 980 8577, Japan
    Opt Lett 32:3513-5. 2007
  3. ncbi request reprint 64 and 128 coherent QAM optical transmission over 150 km using frequency-stabilized laser and heterodyne PLL detection
    Masato Yoshida
    Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Aoba ku, Sendai shi, Miyagi ken, 980 8577 Japan
    Opt Express 16:829-40. 2008
  4. doi request reprint 512 QAM transmission over 240 km using frequency-domain equalization in a digital coherent receiver
    Yuki Koizumi
    Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Sendai, 980 8577 Japan
    Opt Express 20:23383-9. 2012
  5. doi request reprint 160 Gbit/s-300 km single-channel transmission in the 1.1 μm band with a precise GVD and slope compensation
    Kengo Koizumi
    Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Aoba ku, Sendai shi, Miyagi ken 980 8577, Japan
    Opt Express 21:4303-10. 2013
  6. doi request reprint A 31 mW, 280 fs passively mode-locked fiber soliton laser using a high heat-resistant SWNT/P3HT saturable absorber coated with siloxane
    Takato Ono
    Research Institute of Electrical Communication, Tohoku University 2 1 1 Katahira, Sendai, 980 8577 Japan
    Opt Express 20:23659-65. 2012
  7. doi request reprint 400 Gbit/s 256 QAM-OFDM transmission over 720 km with a 14 bit/s/Hz spectral efficiency by using high-resolution FDE
    Tatsunori Omiya
    Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Sendai shi, Miyagi ken, 980 8577 Japan
    Opt Express 21:2632-41. 2013
  8. doi request reprint Marked performance improvement of 256 QAM transmission using a digital back-propagation method
    Kazushi Toyoda
    Research Institute of Electrical Communication, Tohoku University 2 1 1 Katahira, Aoba ku, Sendai, 980 8577 Japan
    Opt Express 20:19815-21. 2012
  9. doi request reprint 1024 QAM (60 Gbit/s) single-carrier coherent optical transmission over 150 km
    Yuki Koizumi
    Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Aoba ku, Sendai shi, Miyagiken 980 8577 Japan
    Opt Express 20:12508-14. 2012
  10. ncbi request reprint Mode-locked laser-type optical atomic clock with an optically pumped Cs gas cell
    Toru Hirayama
    Research Institute of Electrical Communication, Tohoku University, Sendai, Japan
    Opt Lett 32:1241-3. 2007

Collaborators

Detail Information

Publications18

  1. ncbi request reprint Regeneratively mode-locked fiber laser with a repetition rate stability of 4.9x10-15 using a hydrogen maser phase-locked loop
    Masato Yoshida
    1Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Aoba ku, Sendai, Miyagi, 980 8577 Japan
    Opt Lett 32:1827-9. 2007
    ..9x10(-15). The repetition-rate stability was limited by the synthesizer used for the PLL operation, and there was no additional fluctuation induced by the laser operation...
  2. ncbi request reprint 10 GHz regeneratively mode-locked semiconductor optical amplifier fiber ring laser and its linewidth characteristics
    Masato Yoshida
    Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Aoba ku, Sendai, Miyagi 980 8577, Japan
    Opt Lett 32:3513-5. 2007
    ..The linewidth was proportional to the inverse square root of the cavity length, and a linewidth of 1.7 kHz was obtained for a cavity length of 171 m...
  3. ncbi request reprint 64 and 128 coherent QAM optical transmission over 150 km using frequency-stabilized laser and heterodyne PLL detection
    Masato Yoshida
    Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Aoba ku, Sendai shi, Miyagi ken, 980 8577 Japan
    Opt Express 16:829-40. 2008
    ....
  4. doi request reprint 512 QAM transmission over 240 km using frequency-domain equalization in a digital coherent receiver
    Yuki Koizumi
    Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Sendai, 980 8577 Japan
    Opt Express 20:23383-9. 2012
    ..FDE also allows the transmission distance to be extended up to 240 km...
  5. doi request reprint 160 Gbit/s-300 km single-channel transmission in the 1.1 μm band with a precise GVD and slope compensation
    Kengo Koizumi
    Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Aoba ku, Sendai shi, Miyagi ken 980 8577, Japan
    Opt Express 21:4303-10. 2013
    ..5 Gbit/s taking the 7% FEC overhead into account...
  6. doi request reprint A 31 mW, 280 fs passively mode-locked fiber soliton laser using a high heat-resistant SWNT/P3HT saturable absorber coated with siloxane
    Takato Ono
    Research Institute of Electrical Communication, Tohoku University 2 1 1 Katahira, Sendai, 980 8577 Japan
    Opt Express 20:23659-65. 2012
    ..By applying the saturable absorber to a passively mode-locked Er fiber laser, we successfully demonstrated 280 fs, 31 mW pulse generation with a fivefold improvement in heat resistance...
  7. doi request reprint 400 Gbit/s 256 QAM-OFDM transmission over 720 km with a 14 bit/s/Hz spectral efficiency by using high-resolution FDE
    Tatsunori Omiya
    Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Sendai shi, Miyagi ken, 980 8577 Japan
    Opt Express 21:2632-41. 2013
    ..A detailed analytical evaluation of the 256 QAM-OFDM transmission is also provided, which clarifies the influence of quantization error in the digital coherent receiver on the waveform distortion compensation with DBP...
  8. doi request reprint Marked performance improvement of 256 QAM transmission using a digital back-propagation method
    Kazushi Toyoda
    Research Institute of Electrical Communication, Tohoku University 2 1 1 Katahira, Aoba ku, Sendai, 980 8577 Japan
    Opt Express 20:19815-21. 2012
    ....
  9. doi request reprint 1024 QAM (60 Gbit/s) single-carrier coherent optical transmission over 150 km
    Yuki Koizumi
    Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Aoba ku, Sendai shi, Miyagiken 980 8577 Japan
    Opt Express 20:12508-14. 2012
    ..As a result, 60 Gbit/s polarization-multiplexed transmission over 150-km has been achieved at 3 Gsymbol/s within an optical bandwidth of only 4.05 GHz...
  10. ncbi request reprint Mode-locked laser-type optical atomic clock with an optically pumped Cs gas cell
    Toru Hirayama
    Research Institute of Electrical Communication, Tohoku University, Sendai, Japan
    Opt Lett 32:1241-3. 2007
    ..The obtained frequency stabilities reached as high as 1.2 x 10(-12) for tau=1 s and 8.8 x 10(-14) for tau=100 s for a 9.1926 GHz microwave output signal...
  11. doi request reprint 10 GHz, 1.1 ps optical pulse generation from a regeneratively mode-locked Yb fiber laser in the 1.1 μm band
    Kengo Koizumi
    Research Institute of Electrical Communication, Tohoku University, Sendai shi, Miyagiken, Japan
    Opt Express 19:25426-32. 2011
    ..As a result, a 1.1 ps optical pulse with a timing jitter of 140 fs was successfully generated...
  12. doi request reprint Nondestructive measurement of mode couplings along a multi-core fiber using a synchronous multi-channel OTDR
    Masataka Nakazawa
    Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Aoba ku, Sendai shi, Miyagiken 980 8577 Japan
    Opt Express 20:12530-40. 2012
    ..The mode couplings along seven core fibers are successfully obtained using a synchronous seven-channel OTDR...
  13. ncbi request reprint Ultrastable cesium atomic clock with a 9.1926-GHz regeneratively mode-locked fiber laser
    Masatsugu Yakabe
    Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Aoba ku, Sendai 980 8577, Japan
    Opt Lett 30:1512-4. 2005
    ..This Cs atomic clock can generate an optical pulse train with the same stability as that of the obtained microwave, which allows us to deliver a frequency standard optical signal throughout the world by means of optical fiber networks...
  14. doi request reprint Novel RZ-CW conversion scheme for ultra multi-level, high-speed coherent OTDM transmission
    Masataka Nakazawa
    Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Sendai shi, 980 8577, Japan
    Opt Express 19:B574-80. 2011
    ..The advantage of this scheme is successfully demonstrated with 10 Gsymbol/s, 4- and 8-OTDM, 32-RZ/QAM demodulation experiments...
  15. ncbi request reprint C2H2 absolutely optical frequency-stabilized and 40 GHz repetition-rate-stabilized, regeneratively mode-locked picosecond erbium fiber laser at 1.53 microm
    Masataka Nakazawa
    Research Institute of Electrical Communication, Tohoku University, Sendai shi, Japan
    Opt Lett 33:2641-3. 2008
    ..The optical frequency stability of the pulse train reached 2x10(-11) for tau=10-100 s. The key to success is the independent control of the repetition rate without disturbing the optical cavity condition...
  16. ncbi request reprint Polymer saturable absorber materials in the 1.5 microm band using poly-methyl-methacrylate and polystyrene with single-wall carbon nanotubes and their application to a femtosecond laser
    Masataka Nakazawa
    Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Aoba ku, Sendai 980 8577, Japan
    Opt Lett 31:915-7. 2006
    ..This was difficult to achieve with previous thin-film materials. By incorporating PMMA/SWNT as a saturable absorber, a 171 fs pulse is successfully generated in a passively mode-locked fiber laser...
  17. ncbi request reprint Scheme for independently stabilizing the repetition rate and optical frequency of a laser using a regenerative mode-locking technique
    Masataka Nakazawa
    Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Aoba ku, Sendai shi, Miyagi ken 980 8577, Japan
    Opt Lett 33:1059-61. 2008
    ..We experimentally show how this independent control can be realized by employing a 40 GHz harmonically and regeneratively mode-locked fiber laser...
  18. ncbi request reprint Linewidth and relative intensity noise measurements of longitudinal modes in ultrahigh-speed mode-locked laser diodes
    Kentaro Haneda
    Research Institute of Electrical Communication, Tohoku University, 2 1 1 Katahira, Aoba ku, Sendai shi, Miyagi ken 980 8577, Japan
    Opt Lett 30:1000-2. 2005
    ..The RIN value is larger for modes that are distant from the center longitudinal mode. This mode dependence is a consequence of the mode partition noise...