title: Wavelength-independent coupler from fiber to an on-chip cavity, demonstrated over an 850nm span.
abstract: A robust wide band (850 nm) fiber coupler to a whispering-gallery cavity with ultra-high quality factor is experimentally demonstrated. The device trades off ideality for broad-band, efficient input coupling. Output coupling efficiency can remain high enough for practical applications wherein pumping and power extraction must occur over very broad wavelength spans.
authors: Tal
authors: T
authors: Carmon
authors: Steven Y T
authors: SY
authors: Wang
authors: Eric P
authors: EP
authors: Ostby
authors: Kerry J
authors: KJ
authors: Vahala