Optical transceiver based on planar lightwave circuit

1. An optical transceiver comprising:

an optical receptacle configured to input or output an optical signal;

a first planar lightwave circuit through which the optical signal travels;

an arrayed waveguide grating connected to the first planar lightwave circuit;

a first spot size converter connecting the optical receptacle and the first planar lightwave circuit; and

a mirror configured to change a path of an optical output of the arrayed waveguide grating.

2. The optical transceiver of claim 1 , wherein the first planar lightwave circuit, the arrayed waveguide grating and the first spot size converter are formed on a single chip.

3. The optical transceiver of claim 1 , wherein the mirror is a 45-degree mirror.

4. The optical transceiver of claim 1 , further comprising a second planar lightwave circuit connected to the arrayed waveguide grating.

5. The optical transceiver of claim 4 , further comprising a second spot size converter connected to the second planar lightwave circuit.

6. The optical transceiver of claim 5 , further comprising a laser diode connected to the second spot size converter, and a laser diode driver.

7. The optical transceiver of claim 6 , wherein the laser diode driver is connected to a high-speed signal pad by a high-speed signal line.

8. The optical transceiver of claim 6 , further comprising a first mount placed under the laser diode and the laser diode driver.

9. The optical transceiver of claim 8 , wherein the first mount is formed of silicon dioxide and silicon nitride.

10. The optical transceiver of claim 6 , wherein the laser diode and the laser diode driver are connected by a high-speed signal line.

11. The optical transceiver of claim 1 , further comprising a third planar lightwave circuit connected to the arrayed waveguide grating.

12. The optical transceiver of claim 11 , further comprising:

a photodiode connected to the third planar lightwave circuit; and

a trans-impedance amplifier (TIA) connected to the photodiode.

13. The optical transceiver of claim 12 , further comprising a third spot size converter connecting the third planar lightwave circuit and the photodiode.

14. The optical transceiver of claim 12 , wherein the photodiode and the TIA are connected by a high-speed signal line.

15. The optical transceiver of claim 1 , further comprising a second mount placed under the first planar lightwave circuit, the arrayed waveguide grating and the first spot size converter.

16. The optical transceiver of claim 15 , further comprising a third mount placed under the second mount,

wherein a high-speed signal line formed of titanium (Ti), platinum (Pt), and gold (Au) is formed on a portion of the third mount.

17. The optical transceiver of claim 16 , wherein a high-speed signal pad comprising gold-tin (AuSn) is formed on a portion of the third mount.