Reduced coupling loss using a tapered-rib adiabatic-following fiber coupler
- Sandia National Labs., Albuquerque, NM (United States)
The authors present the design and experimental demonstration of a tapered-rib adiabatic-following fiber coupler (TRAF-FiC). This device is an adaptation of a Shani-Henry mode converter fabricated in (Al)GaAs and designed to increase the coupling efficiency of conventional optical fibers to tightly-confined semiconductor rib waveguide devices. This approach offers the potential of significantly reducing fiber butt coupling losses from the typical values of 7 to 10 dB to values of <1 dB. This long-standing packaging problem is one of the major impediments to the widespread acceptance of semiconductor-based optoelectronics. Moreover, the design can be implemented with minimal increase in fabrication complexity since it uses only a straightforward modification to epitaxial growth, and one additional lithography and etching step.
- Research Organization:
- Sandia National Laboratory
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 282407
- Journal Information:
- IEEE Photonics Technology Letters, Journal Name: IEEE Photonics Technology Letters Journal Issue: 8 Vol. 8; ISSN 1041-1135; ISSN IPTLEL
- Country of Publication:
- United States
- Language:
- English
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