In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 38, No. 4S ( 1999-04-01), p. 2573-
Abstract:
The input wavelength dependence of the external quantum
efficiency for InP/InGaAs uni-traveling-carrier photodiodes (UTC-PDs) was examined. A supercontinuum generated in the optical
fiber was used as the monochromatic optical source with the wavelength ranging from 1.55 to 1.7 µm. The observed flatness
of the efficiency shows the applicability of UTC-PDs to wide bandwidth transmission systems in which the bandwidths of the
optical fiber and amplifier are fully utilized. It was also found that a UTC-PD with an acceptor doping density of 2.5×10 18 cm -3 in the photo-absorption layer has a larger external quantum efficiency than a UTC-PD with a lower doping density at a wavelength around 1.7 µm. The mechanism of this enhancement is discussed based on the absorption coefficient and pulse responses measured at various input wavelengths.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.38.2573
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1999
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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