Spirals

Spirals are useful components to insert large waveguides on a small area. In Picazzo there are three different kinds of spirals

• SingleSpirals have a input port inside the spiral and an output port outside the spiral.

• DoubleSpirals have both ports outside the spiral.

• DoubleSpiralsWithInCoupling have both ports outside the spiral with in coupling waveguides.

• FixedLengthSpiral is a double spiral with in coupling sections with a fixed length that can explicitly be set.

All spirals can also be rounded for which there are specialty classes as well.

SingleSpiral	Single spiral class going from the inside to the outside.
SingleSpiralRounded	Rounded single spiral class going from the inside to the outside.
DoubleSpiral	Double spiral class with both access waveguides on the outside of the spiral.
DoubleSpiralRounded	Rounded double spiral class with both access waveguides on the outside of the spiral.
DoubleSpiralWithInCoupling	Double spiral class with both access waveguides on the outside of the spiral.
DoubleSpiralWithInCouplingRounded	Rounded double spiral class with both access waveguides on the outside of the spiral.
FixedLengthSpiral	Spiral with incoupling sections that calculates its length.
FixedLengthSpiralRounded	Rounded spiral with incoupling sections that calculates its length.