Broader spectral width InGaAsP stacked active layer superluminescent diodes

Abstract

Fabrication and characteristics of broader spectral width 1.3 μm and 1.5 μm InGaAsP superluminescent diodes having a novel stacked active layer (STAC-SLDs) structure are reported. The emission spectral width is successfully broadened as much as twice that of conventional SLDs, yielding spectral widths of 80 and 140 nm for the 1.3 μm and the 1.5 μm SLD, respectively.

QD Ultrafast and Continuous Wavelength Laser Diodes for Applications in Biology and Medicine

“…The emission spectral width of the devices was successfully broadened up to a factor of 2 compared to conventional SLDs, yielding spectral widths of 80 and 140 nm for 1300 and 1550 nm SLDs, respectively [90]. However, the use of bulk material has an inherent disadvantage in poor efficiency compared to low-dimensional active material.…”

Broadband Access Networks and Services in Korea

“…Thus, a single Fabry-Perot laser can be used for a WDM source within AE20 nm range. The operating range can be increased further by using a broadband FP-LD that has modified quantum well in the active region [29]. Since we can use the same kind of FP-LDs for all subscribers and communication wavelength is determined by the passive component (i.e., AWG), it is possible to have a single type of transmitter/ receiver regardless of communication wavelength.…”

High performance 1.3 μm InGaAsN superluminescent diodes

“…In general, SLDs requirements are high-output power, efficient coupling into single-mode fibers, and suppression of lasing due to the Fabry-Perot mode under high-output power operation. Several methods have been used to suppress lasing, such as a antireflection coating at one or two facets [5,6,11] , tilting the stripe with respect to the facets [6,7,14] , bending the stripe near the output facet or the rear facet [11,12,15,17] , window buried structure, and an unpumped absorbing region [5,8,9,10,13,14,16,18,19] .…”

“…In the past years, various structures of SLDs that emit at 0.8 [5][6][7][8] , 1.3 [9][10][11][12][13][14][15][16] , and 1.5 μm [17][18][19][20] wavelengths have been reported. In general, SLDs requirements are high-output power, efficient coupling into single-mode fibers, and suppression of lasing due to the Fabry-Perot mode under high-output power operation.…”