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High butt-coupling efficiency to single mode fibers using a 1.55 /spl mu/m InGaAsP laser integrated with a tapered ridge mode transformer
By: Johnson, F.G.; Dagenais, M.; Agrawala, S.; Whaley, R.; Stone, D.; Saini, S.S.; Bartolo, R.E.; Vusirikala, V.;
1997 / IEEE / 0-7803-3895-2
This item was taken from the IEEE Conference ' High butt-coupling efficiency to single mode fibers using a 1.55 /spl mu/m InGaAsP laser integrated with a tapered ridge mode transformer ' The 1.55 /spl mu/m wavelength window is important for future WDM systems, and hence there has been considerable interest in realizing mode expanded lasers at this wavelength. Here, we present a mode expanded laser based on a tapered ridge design, which was grown in a single epitaxial step, and required only conventional lithography and etching techniques. This device showed reduced far-field divergence angles and high coupling efficiencies to a standard cleaved single mode fiber (3.7 dB loss). To our knowledge, this is the lowest loss demonstrated in longer wavelength devices fabricated without using regrowth.
Wavelength Division Multiplexing
Optical Communication Equipment
Optical Fibre Losses
High Butt-coupling Efficiency
Single Mode Fiber Coupling
Tapered Ridge Mode Transformer
Mode Expanded Lasers
Tapered Ridge Design
Single Epitaxial Step
Reduced Far-field Divergence Angles
High Coupling Efficiencies
Standard Cleaved Single Mode Fiber
Optical Fiber Communication
Optical Fibre Couplers
Quantum Well Lasers