Optical path length trimming technique using thin film heaters for silica-based waveguides on Si

Abe, Makoto; Inoue, Y.; Moriwaki, Kazuyuki; Okuno, Masayuki; Ohmori, Yutaka

doi:10.1049/el:19961211

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2012

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Cited by 18 publications

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“…Thin film heaters are formed over MZI arms for frequency tracking and phase trimming [8] and connected to wire bonding pads at the edge of the chip by Au electrodes.…”

Section: Chip Layoutmentioning

confidence: 99%

Compact and Colorless PLC-Type 1-Bit Delay Line Interferometer for DQPSK Demodulator

Kawashima

Nara

2012

IEEE Photon. Technol. Lett.

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A compact and colorless planar lightwave circuit (PLC) type 1-bit delay line interferometer for a differential quadrature phase-shift keying (DQPSK) demodulator is demonstrated by adopting wavelength insensitive couplers with narrow coupling waveguides and novel circuit arrangement suitable for integrated DQPSK receivers. The fabricated interferometer realizes a small chip size and practical properties in both entire C-and L-bands.Index Terms-Delay line interferometer, DQPSK demodulator, optical waveguide, planar lightwave circuit.

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“…Thin film heaters are formed over MZI arms for frequency tracking and phase trimming [8] and connected to wire bonding pads at the edge of the chip by Au electrodes.…”

Section: Chip Layoutmentioning

confidence: 99%