Fig. 1. Schematic diagram of MCI laser

Fig. 2. Reflection spectra at different wavelengths after optimizing the arm length difference. (a) 1530 nm; (b) 1540 nm; (c) 1550 nm; (d) 1560 nm

Fig. 3. Microscope image of MCI laser

Fig. 4. Cross section structure schematic of MCI laser

Fig. 5. Basic performance of MCI laser. (a) Relationship curves between active region current and reverse biased SOA region photocurrent at different wavelengths; (b) relationship between output optical power and micro-heater power of single arm phase section

Fig. 6. Schematic diagram of TOSA packaging

Fig. 7. Characteristics of wavelength locker. (a) Output characteristics of wavelength locker; (b) relationship between S parameter and frequency at different temperatures

Fig. 8. Nano-ITLA. (a) Physical image; (b) principle block diagram

Fig. 9. Test results of MCI laser. (a) Lasing spectra overlay; (b) SMSR; (c) frequency deviation; (d) fiber coupled output power

Fig. 10. Stability test results of MCI laser. (a) Temperature deviation and wavelength drift; (b) output optical power for all wavelengths under different constant power requirements

Fig. 11. Test results of SOA section extinction ratio. (a) Spectra with different bias status of SOA section; (b) extinction ratios under all wavelengths

Fig. 12. Lorentzian linewidths of MCI laser under all wavelengths

Fig. 13. Total power consumption of Nano-ITLA