0.04 Hz relative optical-frequency stability in a 1.5 mu m distributed-Bragg-reflector (DBR) laser

Author

Ishida, Osamu ; Toba, Hiromu ; Tohmori, Yuichi

Author_Institution

NTT Transmision Syst. Lab., Kanagawa, Japan

Volume

1

Issue

12

fYear

1989

Firstpage

452

Lastpage

454

Abstract

The optical frequency of a 1.5- mu m distributed-Bragg-reflector (DBR) laser is stabilized against that of a master laser by heterodyne-type frequency locking with a phase-locked loop (PLL). Despite the laser´s wide linewidth of 16 MHz, stable PLL operation with an optical hold-in range of 26 GHz is realized, and residual frequency fluctuations are reduced to 0.04 Hz at an averaging time of 500 s. The combination of DBR laser and PLL is, therefore, suitable for frequency-controlled light sources. The offset error from the settled frequency caused by the bandlimited beat spectrum is discussed.<>

Keywords

distributed Bragg reflector lasers; frequency control; laser frequency stability; laser transitions; optical variables control; phase-locked loops; physical instrumentation control; semiconductor junction lasers; 1.5 micron; 500 s; DBR laser; averaging time; bandlimited beat spectrum; distributed-Bragg-reflector laser; frequency fluctuations; frequency-controlled light sources; heterodyne-type frequency locking; master laser; offset error; optical hold-in range; phase-locked loop; relative optical-frequency stability; semiconductor laser diode; settled frequency; wide linewidth; Distributed Bragg reflectors; Frequency; Laser stability; Laser tuning; Optical control; Optical filters; Optical mixing; Optical variables control; Phase locked loops; Voltage-controlled oscillators;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.46047

Filename

46047