IanK02/Mach-Zender-Interferometer-PICA Photonic Integrated Circuit (PIC) with four Mach Zender Interferometers (MZI) and associated operation/testing electronics combined into a small PCB.
Heater driver is an open-source printed circuit board by IanK02, from the IanK02/Mach-Zender-Interferometer-PIC repository on GitHub, published under the MIT licence. It is a 2-layer board of 57.9 × 37.3 mm with 56 parts on 32 nets, routed with 173 tracks and 22 vias.
It is built around the LM324AD, MCP4728-E/UN and AMS1117-3.3. Its parts include 19 resistors, 11 capacitors, 4 transistors, 3 ICs and 2 connectors.
A photonic integrated circuit designed in Python with gdsfactory, laid out in KLayout, with a companion PCB designed in KiCad.
Chip implements four Mach-Zender-Interferometers of varying lengths, with accompanying chip providing all required electrical usage and testing hardware.
| Die Layout | PCB 3D View |
|---|---|
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| PCB 2D View | Circuit Schematic |
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This design uses gdsfactory's open-source generic PDK, so the whole layout can be regenerated and freely shared. Layer numbers and components are generic and not tied to any commercial foundry process.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | TestPoint | TestPoint:TestPoint_Pad_D1.5mm | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11 |
| 8 | 100R | Resistor_SMD:R_0805_2012Metric | R4, R6, R8, R10, Rs1, Rs2, Rs3, Rs4 |
| 5 | 100kR | Resistor_SMD:R_0805_2012Metric | R1, R5, R7, R9, R11 |
| 4 | 1kR | Resistor_SMD:R_0805_2012Metric | R12, R13, R14, R15 |
| 4 | 1nF | Capacitor_SMD:C_0805_2012Metric | C7, C9, C10, C11 |
| 4 | 2N7002 | 2N7002:SOT-23TO-236_318-08_ONS | Q1, Q2, Q3, Q4 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 3 | 100nF | Capacitor_SMD:C_0805_2012Metric | C2, C5, C8 |
| 3 | 10uF | Capacitor_SMD:C_0805_2012Metric | C1, C3, C6 |
| 2 | 4.4kR | Resistor_SMD:R_0805_2012Metric | R2, R3 |
| 1 | 22uF | Capacitor_SMD:C_0805_2012Metric | C4 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | Barrel_Jack | Connector_BarrelJack:BarrelJack_SwitchcraftConxall_RAPC10U_Horizontal | J1 |
| 1 | Conn_01x05 | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J2 |
| 1 | D_Schottky | Diode_SMD:D_SOD-123 | D1 |
| 1 | LM324A | LMX24:M14A | U2 |
| 1 | MCP4728 | MCP4278:MSOP10_MC_MCH | U1 |
| 1 | ~ | PIC:PIC_MZI_DIE | MZI1 |
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It measures 57.9 × 37.3 mm and has 2 copper layers, 1.6 mm thick.
56 parts, built around the LM324AD, MCP4728-E/UN and AMS1117-3.3. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the IanK02/Mach-Zender-Interferometer-PIC repository on GitHub, at the commit this page was made from: the board is pcb/heater_driver.kicad_pcb and its schematic pcb/heater_driver.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).