OPTICAL TRANSCEIVER WITH EQUALIZATION AND CONTROLLABLE LASER INTERCONNECTION INTERFACE
First Claim
1. An optical transceiver system comprising:
- a laser device; and
a driver circuit to drive the laser device, the driver circuit including an equalizer that generates high frequency gain to a signal to be transmitted via the laser device.
1 Assignment
0 Petitions
Accused Products
Abstract
An optical transceiver includes an optical IC coupled to a processor IC. For transmit, the optical IC can be understood as a transmitter IC including a laser device or array. For receive, the optical IC can be understood as a receiver IC including a photodetector/photodiode device or array. For a transmitter IC, the processor IC includes a driver for a laser of the transmitter IC. The driver includes an equalizer that applies high frequency gain to a signal transmitted with the laser device. For a receiver IC, the processor IC includes a front end circuit to interface with a photodetector of the receiver IC. The front end circuit includes an equalizer that applies high frequency gain to a signal received by the receiver IC. The driver can be configurable to receive a laser having either orientation: ground termination or supply termination.
36 Citations
19 Claims
-
1. An optical transceiver system comprising:
-
a laser device; and a driver circuit to drive the laser device, the driver circuit including an equalizer that generates high frequency gain to a signal to be transmitted via the laser device. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. An optical transceiver system comprising:
-
a photo detector device; a transimpedance amplifier (TIA) coupled to the photo detector device to convert an optical signal received at the photo detector device into an electrical signal; and an equalization circuit coupled to the TIA to generate high frequency gain in the electrical signal. - View Dependent Claims (9, 10, 11)
-
-
12. An optical small form factor pluggable (SFP) transceiver comprising:
-
a printed circuit board (PCB) including pads to electrically connect to a peripheral port; an optical transmitter integrated circuit (IC) disposed on the PCB; an optical receiver IC disposed on the PCB; and a processor IC disposed on the PCB, including signal processing logic, a driver circuit to drive a VCSEL (vertical cavity surface emitting laser) of the optical transmitter IC, the driver circuit including an equalizer that applies high frequency gain to a signal to be transmitted via the VCSEL, and an optical receiver front end circuit including a transimpedance amplifier (TIA) coupled to the optical receiver IC to convert an optical signal received at a photodiode of the optical receiver IC into an electrical signal, and an equalization circuit coupled to the TIA to apply high frequency gain to the electrical signal; and a connector housing to at least partially enclose the printed circuit board. - View Dependent Claims (13, 14, 15)
-
-
16. An optical transmitter device comprising:
-
a connection point to interface with a laser device, wherein the connection point is configured to connect to either a laser device that couples between the connection point and a supply voltage, or a laser device that couples between the connection point and a circuit ground; and a driver circuit to drive the laser device, including providing an output signal at the connection point, wherein the driver circuit includes a variable current source configured to produce a first current when a laser device that couples between the connection point and a supply voltage is connected, or to produce a second current different from the first current when a laser device that couples between the connection point and a circuit ground is connected. - View Dependent Claims (17, 18, 19)
-
Specification