scholarly journals Performance Analysis of a Multi-Function Mach-Zehnder Interferometer Based Photonic Architecture on SOI Acting as a Frequency Shifter

Photonics ◽  
2021 ◽  
Vol 8 (12) ◽  
pp. 561
Author(s):  
Gazi Mahamud Hasan ◽  
Mehedi Hasan ◽  
Trevor J. Hall
Keyword(s):  
Frequency Conversion ◽  
Spatial Separation ◽  
Frequency Multiplier ◽  
Zehnder Interferometer ◽  
Multimode Interference ◽  
Optical Frequency ◽  
Frequency Shifter ◽  
Multimode Interference Couplers ◽  
Iq Modulator ◽  
Mach Zehnder Interferometer

A photonic frequency shifter based on generalized Mach-Zehnder interferometer (GMZI) architecture is presented and experimentally validated. The circuit consists of four Mach-Zehnder modulators (MZM) in a 4 × 4 network bounded by two 4 × 4 multimode interference couplers and functionally equivalent to two parallel dual-parallel MZM (DP-MZM). The circuit can offer static bias free operation, virtual connectivity control of the components, and spatial separation of up- and down-converted carriers, which can be collected from separate ports without using any optical demultiplexing filters. Thus, the design permits remote heterodyning (advantages which cannot be obtained using a commercial DP-MZM or filter based optical frequency shifter). Experimental investigation shows deviation from ideal performance due to possible fabrication error and poor fiber-chip coupling. A carrier suppression of >20 dB and spurious sideband suppression >12 dB relative to the principal harmonics is achieved without any tuning for bias adjustment. In addition to the frequency conversion, the integration feasible circuit can also perform as a sub-carrier generator, IQ modulator, and frequency multiplier.

scholarly journals Performance analysis of a multi - function photonic architecture on SOI acting as a frequency shifter

2020 ◽  
Author(s):  
Gazi Mahamud Hasan ◽  
Mehedi Hasan ◽  
trevor hall
Keyword(s):  
Frequency Conversion ◽  
Frequency Multiplier ◽  
Silicon On Insulator ◽  
Multimode Interference ◽  
Frequency Shifter ◽  
Phase Modulators ◽  
Dc Bias ◽  
Photonic Circuit ◽  
Multimode Interference Couplers ◽  
Iq Modulator

A multi-functional photonic circuit implemented on silicon on insulator (SOI) platform is reported. Eight phase modulators are connected to provide four Mach-Zehnder interferometer structure in parallel. Multimode interference couplers are used as the splitter/combiner of the MZI structures to provide static DC bias. This architecture generates two principle spatially separated 1<sup>st</sup> order harmonics from a single light source, which may be collected from separate ports without using any optical demultiplexing filters which permits remote heterodyning. A carrier suppression of >20 dB and spurious sideband suppression > 12 dB relative to the principle harmonics is achieved with bias voltage tuning only. In addition to the frequency conversion, the circuit can also perform as a sub-carrier generator, IQ modulator and frequency multiplier.

scholarly journals Performance analysis of a multi - function photonic architecture on SOI acting as a frequency shifter

2020 ◽  
Author(s):  
Gazi Mahamud Hasan ◽  
Mehedi Hasan ◽  
trevor hall
Keyword(s):  
Frequency Conversion ◽  
Frequency Multiplier ◽  
Silicon On Insulator ◽  
Multimode Interference ◽  
Frequency Shifter ◽  
Phase Modulators ◽  
Dc Bias ◽  
Photonic Circuit ◽  
Multimode Interference Couplers ◽  
Iq Modulator

A multi-functional photonic circuit implemented on silicon on insulator (SOI) platform is reported. Eight phase modulators are connected to provide four Mach-Zehnder interferometer structure in parallel. Multimode interference couplers are used as the splitter/combiner of the MZI structures to provide static DC bias. This architecture generates two principle spatially separated 1<sup>st</sup> order harmonics from a single light source, which may be collected from separate ports without using any optical demultiplexing filters which permits remote heterodyning. A carrier suppression of >20 dB and spurious sideband suppression > 12 dB relative to the principle harmonics is achieved with bias voltage tuning only. In addition to the frequency conversion, the circuit can also perform as a sub-carrier generator, IQ modulator and frequency multiplier.

scholarly journals Control of Kerr-microresonator optical frequency comb by a dual-parallel Mach-Zehnder interferometer

2019 ◽  
Vol 27 (4) ◽  
pp. 3873 ◽  
Author(s):  
Naoya Kuse ◽  
Travis C. Briles ◽  
Scott B. Papp ◽  
Martin E. Fermann
Keyword(s):  
Frequency Comb ◽  
Optical Frequency Comb ◽  
Zehnder Interferometer ◽  
Optical Frequency ◽  
Mach Zehnder Interferometer

A Quasi-Distributed Optical Speckle Sensor and Its Application in Pipeline Security

2008 ◽  
Author(s):  
Jun Li ◽  
Pengchao Chen ◽  
Yongjun Cai ◽  
Dongjie Tan ◽  
Hengzhang Zhou
Keyword(s):  
Experimental Test ◽  
Optical Sensor ◽  
Single Mode ◽  
Zehnder Interferometer ◽  
Multimode Interference ◽  
Underground Pipeline ◽  
Fiber Optical ◽  
Higher Sensitivity ◽  
Mach Zehnder Interferometer

A novel fiber optical speckle sensor based on multimode interference for underground pipeline intrusion detecting is investigated both theoretically and experimentally. The sensor utilizes a single mode to multimode to single mode (SMF-MMF-SMF) structure as a sensing unit, which cascade to create a quasi-distributed optical sensor. To pave it near the underground pipeline we can detect any valid intrusion caused by motion, sound or vibration acts on the fiber. Experimental test shows that the detecting distance can be about 30Km and the locating accuracy of intrusion event is ±500m. Compared with Mach-Zehnder interferometer based configuration it has a much higher sensitivity.

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