Abstract
A new wavelength and mode selective coupler (WMSC) was fabricated coupling hollow optical fiber and standard single mode fiber. This compact and robust wavelength and mode selective coupling device(WMSC) has a broad band of operation, low insertion loss, and high mode conversion efficiency. The fabricated WMSC routes 1.3 /spl mu/m signals directed to the holey optical fibre (HOF) port converting LP/sub 01/ mode to a ring shape mode and transports 1.5 /spl mu/m signal to the SMF port in LP/sub 01/ mode. The measured insertion loss at 1.3 /spl mu/m and 1.5 /spl mu/m were 2.1 dB and 0.15 dB, respectively. The channel isolations at 1.3 /spl mu/m was over 9.8 dB and 1.5 /spl mu/m was over 20 dB. The coupling efficiency from LP, mode of SMF to the ring shape mode of HOF around 13 /spl mu/m was /spl sim/88% and the coupling efficiency from the LP/sub 01/ mode of SMF to the LP/sub 01/ mode of SMF around 1.5 /spl mu/m was /spl sim/97%. The proposed device can be used for applications in all optical inter-connections among fiber links.
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