Frequency response of a unidirectional-output optical frequency conversion device with an asymmetrical-κDBR laser structure

Hiroshi Yasaka, Kiyoto Takahata, Kazuo Kasaya, Kunishige Oe

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The frequency response of a unidirectional-output optical frequency conversion device is measured. The device has a saturable absorber region within the active region, which acts as an optical gate for converted light. The 3-dB bandwidth of the device with saturable absorber region is measured to be 800 MHz, and is found to be limited by the frequency response of the saturable absorber region. To operate the device faster, lasing mode intensity modulation by input light is attempted by using the device in a laser diode mode. In this case, the electrodes of the saturable absorber and the gain regions are connected electrically, and the saturable absorber region is also biased far above the threshold condition at the same time with the gain region. The 3-dB bandwidth of the device increases to over 10 GHz, and the 10 Gb/s nonreturn-to-zero (NRZ) eye pattern can be observed when the input TM-polarized light intensity is modulated by a 10 Gb/s NRZ pseudo-random signal.

Original languageEnglish
Pages (from-to)1306-1310
Number of pages5
JournalIEEE Photonics Technology Letters
Volume5
Issue number11
DOIs
Publication statusPublished - 1993
Externally publishedYes

Fingerprint

DBR lasers
Saturable absorbers
Optical frequency conversion
frequency converters
frequency response
Frequency response
absorbers
output
Bandwidth
random signals
bandwidth
Light polarization
Semiconductor lasers
polarized light
luminous intensity
Modulation
lasing
semiconductor lasers
Electrodes
modulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

Cite this

Frequency response of a unidirectional-output optical frequency conversion device with an asymmetrical-κDBR laser structure. / Yasaka, Hiroshi; Takahata, Kiyoto; Kasaya, Kazuo; Oe, Kunishige.

In: IEEE Photonics Technology Letters, Vol. 5, No. 11, 1993, p. 1306-1310.

Research output: Contribution to journalArticle

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