Abstract

The design and optimization of a novel InP-based monolithically integrated optical channel monitor are presented. The device, which comprises a flat-field echelle grating and a slab photodetector array, can monitor signals in 40 wavelength channels separated by 100 GHz. The authors' simulations show that the novel design can result in a device of a smaller size and with a flatter and wider passband than those reported previously. It also features simpler fabrication without the need for output waveguides, thus eliminating issues related to fabrication-sensitive waveguide couplings. The shape of the slab waveguide detectors and the vertical layered structure are optimized to obtain a low crosstalk and a low polarization dependence.

© 2006 IEEE

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References

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Acta Photonica Sinica

H. Wen, S. He, Z. Sheng, "Design of a flat-field EDG wavelength demultiplxer using a two stigmatic points method," Acta Photonica Sinica 32, 308-310 (2003).

IEEE J. Sel. Topics Quantum Electron.

Y. Yoshikuni, "Semiconductor arrayed waveguide gratings for photonic integrated devices," IEEE J. Sel. Topics Quantum Electron. 8, 1102-1114 (2002).

J.-J. He, "Phase-dithered waveguide grating with flat passband and sharp transitions," IEEE J. Sel. Topics Quantum Electron. 8, 1186-1193 (2002).

IEEE Photon. Technol. Lett.

V. I. Tolstikhin, A. Densmore, K. Pimenov, "Single-mode vertical integration of PIN photodetectors with optical waveguides for monitoring in WDM transmission systems," IEEE Photon. Technol. Lett. 15, 843-845 (2003).

S. Janz, A. Balakrishnan, S. Charbonneau, "Planar waveguide echelle gratings in silica-on-silicon," IEEE Photon. Technol. Lett. 16, 503-505 (2004).

J.-J. He, E. S. Koteles, B. Lamontagne, "Integrated polarisation compensator for WDM waveguide demultiplexers," IEEE Photon. Technol. Lett. 11, 224-226 (1999).

J. Lightw. Technol.

J.-J. He, B. Lamontagne, A. Delage, "Monolithic integrated wavelength demultiplexer based on a waveguide rowland circle grating in InGaAsP/InP," J. Lightw. Technol. 16, 631-638 (1998).

V. I. Tolstikhin, A. Densmore, K. Pimenov, "Monolithically integrated optical channel monitor for DWDM transmission systems," J. Lightw. Technol. 22, 146-153 (2004).

J. Vac. Sci. Technol. A, Vac. Surf. Films

V. I. Tolstikhin, "Optical properties of semiconductor heterostructures for active photonic device modeling," J. Vac. Sci. Technol. A, Vac. Surf. Films 18, 605-609 (2000).

Opt. Lett.

Other

J.-J. He, B. Lamontagne, A. Delage, "Sources of crosstalk in grating based monolithic integrated wavelength demultiplexers," Proc. Appl. Photon. Technol. 3: Closing the Gap Between Theory, Development and Application (1998) pp. 593-598.

E. Michielssen, W. C. Chew, D. S. Weile, "Genetic algorithm optimized perfectly matched layers for finite difference frequency domain applications," Proc. Antennas and Propag. Soc. Int. Symp., AP-S. Dig. (1996) pp. 2106-2109.

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