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Proceedings Paper

Temperature characterization of separate absorption, grading, charge, and multiplication InP/InGaAs avalanche photodiodes
Author(s): Jeffrey C. Yu; Larry E. Tarof; T. Baird; D. McGhan; Robert Bruce; D. G. Knight
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Paper Abstract

InP/In0.53Ga0.47As (InGaAs) avalanche photodiodes (APDs) are often used in long distance, high bit rate fiber optical transmission systems operating in the 0.92-1.65 micrometers wavelength region. Lately attention has focused on the separate absorption, grading, charge and multiplication (SAGCM) structure. Recent studies have demonstrated that the room temperature device operation is less affected by changes in fabrication parameters than in the more conventional separate absorption, grading and multiplication (SAGM) structure, emphasising the potential of the SAGCM APD for manufacture. However, for coolerless applications, which are increasingly desired, the device temperature is not directly controlled but rather is determined from environmental influences. Therefore it is necessary to evaluate the APD performance as a function of temperature. In this paper temperature dependent measurements of gain, breakdown voltage, leakage current, bandwidth and noise on SAGCM APDs in the range -50 to 85 degree(s)c are presented. It is found that the bandwidth vs. gain dependence, gain and breakdown voltage are strongly correlated with the temperature. The gain-bandwidth product and minimum gain for useful bandwidth both increase with decreasing temperature or decreasing breakdown voltage. In addition, temperature studies of these devices has been used to evaluate the quality of the grading layer in a more stringent manner than from room temperature measurements alone.

Paper Details

Date Published: 2 May 1994
PDF: 9 pages
Proc. SPIE 2149, Technologies for Optical Fiber Communications, (2 May 1994); doi: 10.1117/12.175270
Show Author Affiliations
Jeffrey C. Yu, Bell-Northern Research Ltd. (Canada)
Larry E. Tarof, Bell-Northern Research Ltd. (Canada)
T. Baird, Northern Telecom Ltd. (Canada)
D. McGhan, Bell-Northern Research Ltd. (Canada)
Robert Bruce, Bell-Northern Research Ltd. (Canada)
D. G. Knight, Bell-Northern Research Ltd. (Canada)

Published in SPIE Proceedings Vol. 2149:
Technologies for Optical Fiber Communications
Gail J. Brown; Susan R. Sloan; Kenneth D. Pedrotti; Didier J. Decoster; Didier J. Decoster; Joanne S. LaCourse; Yoon-Soo Park; Kenneth D. Pedrotti; Susan R. Sloan, Editor(s)

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