Multi-port circulator
AssigneeOplink Communications, Inc.
InventorWei-Zhong Li
Life of this patent
Estimating the term…
Abstract
An extendable four-port circulator includes a middle birefringent crystal, a first birefringent crystal, a first non-reciprocal device, a second birefringent crystal, and a second non-reciprocal device. The first non-reciprocal device is coupled to the first birefringent crystal. The second non-reciprocal device is coupled to the second birefringent crystal. The middle birefringent crystal includes a first surface, a second surface, a third surface, and a fourth surface. The first surface is coupled to the first non-reciprocal device. The second surface is coupled to the second non-reciprocal device. The third surface defines first and second extension interfaces. The fourth surface defines third and fourth extension interfaces. A multi-port circulator includes at least one extendable four-port circulator.
Claims58
An extendable four-port circulator comprising:
- a middle birefringent crystal;
- a first birefringent crystal;
- a first non-reciprocal device coupled to the first birefringent crystal;
- a second birefringent crystal;
- a second non-reciprocal device coupled to the second birefringent crystal;
- and
- wherein the middle birefringent crystal having
- a first surface coupled to the first non-reciprocal device,
- a second surface coupled to the second non-reciprocal device,
- a third surface defining a first and a second extension interfaces, and
- a fourth surface defining a third and a fourth extension interfaces.
A multi-port circulator comprising:
- a middle birefringent crystal;
- a first common non-reciprocal device coupled to the middle birefringent crystal;
- a second common non-reciprocal device coupled to the middle birefringent crystal;
- a first common birefringent crystal coupled to the first common non-reciprocal device;
- and
- a second common birefringent crystal coupled to the second common non-reciprocal device.
A multi-port circulator comprising:
- a middle birefringent crystal;
- a first and a second common non-reciprocal device each coupled to the middle birefringent crystal;
- a first and a third side birefringent crystal each coupled to the first common non-reciprocal device;
- and
- a second and a fourth side birefringent crystal each coupled to the second common non-reciprocal device.
A multi-port circulator comprising:
- a middle birefringent crystal;
- a first and a third non-reciprocal device each coupled to the middle birefringent crystal;
- a second and a fourth non-reciprocal device each coupled to the middle birefringent crystal;
- a first side birefringent crystal coupled to the first non-reciprocal device;
- a second side birefringent crystal coupled to the second non-reciprocal device;
- a third side birefringent crystal coupled to the third non-reciprocal device;
- and
- a fourth side birefringent crystal coupled to the fourth non-reciprocal device.
Dependencies are inferred from the claim text.